Finding the Fourth Proportional to 498,512.12, 687,943.20 and 272,157.62
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Solution
The fourth proportional to 498,512.12, 687,943.20 and 272,157.62 is: 375,575.59
Step by Step Solution
- Step 1: Write the proportion equation
498,512.12 : 687,943.20 = 272,157.62 : x - Step 2: Convert to fraction form
498,512.12/687,943.20 = 272,157.62/x - Step 3: Cross multiply
498,512.12x = 687,943.20 × 272,157.62 - Step 4: Simplify right side
498,512.12x = 187,228,984,007.18 - Step 5: Solve for x
x = 187,228,984,007.18/498,512.12 - Step 6: Final answer
x = 375,575.59
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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.