Finding the Fourth Proportional to 278,512,368.80, 417,768,553.20 and 181,657,246.55
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Solution
The fourth proportional to 278,512,368.80, 417,768,553.20 and 181,657,246.55 is: 272,485,869.83
Step by Step Solution
- Step 1: Write the proportion equation
278,512,368.80 : 417,768,553.20 = 181,657,246.55 : x - Step 2: Convert to fraction form
278,512,368.80/417,768,553.20 = 181,657,246.55/x - Step 3: Cross multiply
278,512,368.80x = 417,768,553.20 × 181,657,246.55 - Step 4: Simplify right side
278,512,368.80x = 75,890,685,069,489,200 - Step 5: Solve for x
x = 75,890,685,069,489,200/278,512,368.80 - Step 6: Final answer
x = 272,485,869.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.