Finding the Fourth Proportional to 211,531.20, 317,311.20 and 67,425.60
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Solution
The fourth proportional to 211,531.20, 317,311.20 and 67,425.60 is: 101,142.99
Step by Step Solution
- Step 1: Write the proportion equation
211,531.20 : 317,311.20 = 67,425.60 : x - Step 2: Convert to fraction form
211,531.20/317,311.20 = 67,425.60/x - Step 3: Cross multiply
211,531.20x = 317,311.20 × 67,425.60 - Step 4: Simplify right side
211,531.20x = 21,394,898,046.72 - Step 5: Solve for x
x = 21,394,898,046.72/211,531.20 - Step 6: Final answer
x = 101,142.99
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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.