Finding the Fourth Proportional to 331,545.80, 497,318.70 and 279,057.80
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Solution
The fourth proportional to 331,545.80, 497,318.70 and 279,057.80 is: 418,586.70
Step by Step Solution
- Step 1: Write the proportion equation
331,545.80 : 497,318.70 = 279,057.80 : x - Step 2: Convert to fraction form
331,545.80/497,318.70 = 279,057.80/x - Step 3: Cross multiply
331,545.80x = 497,318.70 × 279,057.80 - Step 4: Simplify right side
331,545.80x = 138,780,662,320.86 - Step 5: Solve for x
x = 138,780,662,320.86/331,545.80 - Step 6: Final answer
x = 418,586.70
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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.