Nebraska is about 4.8 times smaller than Tanzania.

Tanzania is approximately 947,300 sq km, while Nebraska is approximately 199,099 sq km, making Nebraska 21.02% the size of Tanzania. Meanwhile, the population of Tanzania is ~63.9 million people (62.0 million fewer people live in Nebraska).
Tip: This to-scale comparison of Tanzania vs. Nebraska uses the Mercator projection, which distorts the size of regions near the poles.