Finding the Fourth Proportional to 478,321.20, 660,129.84 and 357,252.32
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Solution
The fourth proportional to 478,321.20, 660,129.84 and 357,252.32 is: 493,042.99
Step by Step Solution
- Step 1: Write the proportion equation
478,321.20 : 660,129.84 = 357,252.32 : x - Step 2: Convert to fraction form
478,321.20/660,129.84 = 357,252.32/x - Step 3: Cross multiply
478,321.20x = 660,129.84 × 357,252.32 - Step 4: Simplify right side
478,321.20x = 235,832,916,841.23 - Step 5: Solve for x
x = 235,832,916,841.23/478,321.20 - Step 6: Final answer
x = 493,042.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.