most schools require at least one econ course for journalism majors - all part of being a well-rounded journalist
Here's a trick, though, and it's no bullshit. Especially in the broadcast world (both radio and TV) employers don't really worry too much about your grades. They want to see that you graduated and that your extra-curricular activities indicate a wide variety of interests. In other words, it's more important to join Habitat and the debate team than it is to get an A in everything.
Also, intern intern intern. Get as many internships under your belt as you possibly can. Many stations will take any intern that wants to come - they just won't pay you because they're small-market and can't afford to. Those are the stations you want to go to. They'll let you do just about everything (sometimes they'll even put you on the air when you're ready) whereas the larger market stations that can afford to pay you pretty much limit you to getting people coffee and maybe running through archival footage to find something for someone's stories.