Finding the Fourth Proportional to 391,079,091.63, 539,680,467.02 and 212,458,363.97
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Solution
The fourth proportional to 391,079,091.63, 539,680,467.02 and 212,458,363.97 is: 293,187,827.06
Step by Step Solution
- Step 1: Write the proportion equation
391,079,091.63 : 539,680,467.02 = 212,458,363.97 : x - Step 2: Convert to fraction form
391,079,091.63/539,680,467.02 = 212,458,363.97/x - Step 3: Cross multiply
391,079,091.63x = 539,680,467.02 × 212,458,363.97 - Step 4: Simplify right side
391,079,091.63x = 114,659,629,085,874,048 - Step 5: Solve for x
x = 114,659,629,085,874,048/391,079,091.63 - Step 6: Final answer
x = 293,187,827.06
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.