Finding the Fourth Proportional to 261,319,471.13, 391,979,136.23 and 97,569,997.08
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Solution
The fourth proportional to 261,319,471.13, 391,979,136.23 and 97,569,997.08 is: 146,354,969.31
Step by Step Solution
- Step 1: Write the proportion equation
261,319,471.13 : 391,979,136.23 = 97,569,997.08 : x - Step 2: Convert to fraction form
261,319,471.13/391,979,136.23 = 97,569,997.08/x - Step 3: Cross multiply
261,319,471.13x = 391,979,136.23 × 97,569,997.08 - Step 4: Simplify right side
261,319,471.13x = 38,245,403,176,894,176 - Step 5: Solve for x
x = 38,245,403,176,894,176/261,319,471.13 - Step 6: Final answer
x = 146,354,969.31
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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.