Finding the Fourth Proportional to 268,207.70, 402,311.55 and 143,791.70
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Solution
The fourth proportional to 268,207.70, 402,311.55 and 143,791.70 is: 215,687.55
Step by Step Solution
- Step 1: Write the proportion equation
268,207.70 : 402,311.55 = 143,791.70 : x - Step 2: Convert to fraction form
268,207.70/402,311.55 = 143,791.70/x - Step 3: Cross multiply
268,207.70x = 402,311.55 × 143,791.70 - Step 4: Simplify right side
268,207.70x = 57,849,061,704.14 - Step 5: Solve for x
x = 57,849,061,704.14/268,207.70 - Step 6: Final answer
x = 215,687.55
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1.5x scale
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.