Finding the Fourth Proportional to 409,484.20, 614,312.70 and 129,029.80
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Solution
The fourth proportional to 409,484.20, 614,312.70 and 129,029.80 is: 193,571.92
Step by Step Solution
- Step 1: Write the proportion equation
409,484.20 : 614,312.70 = 129,029.80 : x - Step 2: Convert to fraction form
409,484.20/614,312.70 = 129,029.80/x - Step 3: Cross multiply
409,484.20x = 614,312.70 × 129,029.80 - Step 4: Simplify right side
409,484.20x = 79,264,644,818.46 - Step 5: Solve for x
x = 79,264,644,818.46/409,484.20 - Step 6: Final answer
x = 193,571.92
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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.