Finding the Fourth Proportional to 212,489.64, 318,616.50 and 98,512.92
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Solution
The fourth proportional to 212,489.64, 318,616.50 and 98,512.92 is: 147,714.69
Step by Step Solution
- Step 1: Write the proportion equation
212,489.64 : 318,616.50 = 98,512.92 : x - Step 2: Convert to fraction form
212,489.64/318,616.50 = 98,512.92/x - Step 3: Cross multiply
212,489.64x = 318,616.50 × 98,512.92 - Step 4: Simplify right side
212,489.64x = 31,387,841,775.18 - Step 5: Solve for x
x = 31,387,841,775.18/212,489.64 - Step 6: Final answer
x = 147,714.69
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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.