Finding the Fourth Proportional to 409,620.20, 614,430.30 and 129,165.80
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Solution
The fourth proportional to 409,620.20, 614,430.30 and 129,165.80 is: 193,748.70
Step by Step Solution
- Step 1: Write the proportion equation
409,620.20 : 614,430.30 = 129,165.80 : x - Step 2: Convert to fraction form
409,620.20/614,430.30 = 129,165.80/x - Step 3: Cross multiply
409,620.20x = 614,430.30 × 129,165.80 - Step 4: Simplify right side
409,620.20x = 79,363,381,243.74 - Step 5: Solve for x
x = 79,363,381,243.74/409,620.20 - Step 6: Final answer
x = 193,748.70
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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.