Finding the Fourth Proportional to 261,858,402.91, 392,773,366.99 and 80,105,580.91
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Solution
The fourth proportional to 261,858,402.91, 392,773,366.99 and 80,105,580.91 is: 120,154,015.98
Step by Step Solution
- Step 1: Write the proportion equation
261,858,402.91 : 392,773,366.99 = 80,105,580.91 : x - Step 2: Convert to fraction form
261,858,402.91/392,773,366.99 = 80,105,580.91/x - Step 3: Cross multiply
261,858,402.91x = 392,773,366.99 × 80,105,580.91 - Step 4: Simplify right side
261,858,402.91x = 31,463,338,728,710,568 - Step 5: Solve for x
x = 31,463,338,728,710,568/261,858,402.91 - Step 6: Final answer
x = 120,154,015.98
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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.