Finding the Fourth Proportional to 395,687.40, 593,531.10 and 115,213.80
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Solution
The fourth proportional to 395,687.40, 593,531.10 and 115,213.80 is: 172,820.70
Step by Step Solution
- Step 1: Write the proportion equation
395,687.40 : 593,531.10 = 115,213.80 : x - Step 2: Convert to fraction form
395,687.40/593,531.10 = 115,213.80/x - Step 3: Cross multiply
395,687.40x = 593,531.10 × 115,213.80 - Step 4: Simplify right side
395,687.40x = 68,382,973,449.18 - Step 5: Solve for x
x = 68,382,973,449.18/395,687.40 - Step 6: Final answer
x = 172,820.70
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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.