Beneatha's pride is based on culture while Walter is just too proud to take responsibility for his problems and pushes them onto others.
Beneatha actually wants to connect with African heritage. She learns traditional African dances and dress in traditional African clothes. She gets engaged to Asagai and they plan to return back to Africa, which was her desire.
In the end, Walter also embraces his culture, but not in the same way Beneatha did. He learns that to become a man, you have to put your pride aside. By the end play, he becomes mature and wants to become successful and provider for his family.
