Finding the Fourth Proportional to 409,723.26, 614,640.98 and 139,778.92
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Solution
The fourth proportional to 409,723.26, 614,640.98 and 139,778.92 is: 209,687.52
Step by Step Solution
- Step 1: Write the proportion equation
409,723.26 : 614,640.98 = 139,778.92 : x - Step 2: Convert to fraction form
409,723.26/614,640.98 = 139,778.92/x - Step 3: Cross multiply
409,723.26x = 614,640.98 × 139,778.92 - Step 4: Simplify right side
409,723.26x = 85,913,854,432.31 - Step 5: Solve for x
x = 85,913,854,432.31/409,723.26 - Step 6: Final answer
x = 209,687.52
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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.