Finding the Fourth Proportional to 272,863.60, 409,489.80 and 115,205.20
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Solution
The fourth proportional to 272,863.60, 409,489.80 and 115,205.20 is: 172,889.88
Step by Step Solution
- Step 1: Write the proportion equation
272,863.60 : 409,489.80 = 115,205.20 : x - Step 2: Convert to fraction form
272,863.60/409,489.80 = 115,205.20/x - Step 3: Cross multiply
272,863.60x = 409,489.80 × 115,205.20 - Step 4: Simplify right side
272,863.60x = 47,175,354,306.96 - Step 5: Solve for x
x = 47,175,354,306.96/272,863.60 - Step 6: Final answer
x = 172,889.88
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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.