Finding the Fourth Proportional to 285,545.80, 428,318.70 and 272,423.80
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Solution
The fourth proportional to 285,545.80, 428,318.70 and 272,423.80 is: 408,635.70
Step by Step Solution
- Step 1: Write the proportion equation
285,545.80 : 428,318.70 = 272,423.80 : x - Step 2: Convert to fraction form
285,545.80/428,318.70 = 272,423.80/x - Step 3: Cross multiply
285,545.80x = 428,318.70 × 272,423.80 - Step 4: Simplify right side
285,545.80x = 116,684,207,865.06 - Step 5: Solve for x
x = 116,684,207,865.06/285,545.80 - Step 6: Final answer
x = 408,635.70
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1.5x scale
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.