Finding the Fourth Proportional to 409,688.20, 614,532.30 and 129,233.80
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Solution
The fourth proportional to 409,688.20, 614,532.30 and 129,233.80 is: 193,850.70
Step by Step Solution
- Step 1: Write the proportion equation
409,688.20 : 614,532.30 = 129,233.80 : x - Step 2: Convert to fraction form
409,688.20/614,532.30 = 129,233.80/x - Step 3: Cross multiply
409,688.20x = 614,532.30 × 129,233.80 - Step 4: Simplify right side
409,688.20x = 79,418,344,351.74 - Step 5: Solve for x
x = 79,418,344,351.74/409,688.20 - Step 6: Final answer
x = 193,850.70
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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.