Finding the Fourth Proportional to 409,639.20, 614,545.20 and 129,184.80
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Solution
The fourth proportional to 409,639.20, 614,545.20 and 129,184.80 is: 193,804.45
Step by Step Solution
- Step 1: Write the proportion equation
409,639.20 : 614,545.20 = 129,184.80 : x - Step 2: Convert to fraction form
409,639.20/614,545.20 = 129,184.80/x - Step 3: Cross multiply
409,639.20x = 614,545.20 × 129,184.80 - Step 4: Simplify right side
409,639.20x = 79,389,898,752.96 - Step 5: Solve for x
x = 79,389,898,752.96/409,639.20 - Step 6: Final answer
x = 193,804.45
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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.