Finding the Fourth Proportional to 281,217.62, 421,893.26 and 91,679.24
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Solution
The fourth proportional to 281,217.62, 421,893.26 and 91,679.24 is: 137,540.65
Step by Step Solution
- Step 1: Write the proportion equation
281,217.62 : 421,893.26 = 91,679.24 : x - Step 2: Convert to fraction form
281,217.62/421,893.26 = 91,679.24/x - Step 3: Cross multiply
281,217.62x = 421,893.26 × 91,679.24 - Step 4: Simplify right side
281,217.62x = 38,678,854,034.26 - Step 5: Solve for x
x = 38,678,854,034.26/281,217.62 - Step 6: Final answer
x = 137,540.65
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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.