Finding the Fourth Proportional to 462,129.20, 693,193.80 and 129,705.20
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Solution
The fourth proportional to 462,129.20, 693,193.80 and 129,705.20 is: 194,557.80
Step by Step Solution
- Step 1: Write the proportion equation
462,129.20 : 693,193.80 = 129,705.20 : x - Step 2: Convert to fraction form
462,129.20/693,193.80 = 129,705.20/x - Step 3: Cross multiply
462,129.20x = 693,193.80 × 129,705.20 - Step 4: Simplify right side
462,129.20x = 89,910,840,467.76 - Step 5: Solve for x
x = 89,910,840,467.76/462,129.20 - Step 6: Final answer
x = 194,557.80
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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.