Finding the Fourth Proportional to 316,235.81, 474,354.17 and 129,247.31
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Solution
The fourth proportional to 316,235.81, 474,354.17 and 129,247.31 is: 193,871.15
Step by Step Solution
- Step 1: Write the proportion equation
316,235.81 : 474,354.17 = 129,247.31 : x - Step 2: Convert to fraction form
316,235.81/474,354.17 = 129,247.31/x - Step 3: Cross multiply
316,235.81x = 474,354.17 × 129,247.31 - Step 4: Simplify right side
316,235.81x = 61,309,002,211.13 - Step 5: Solve for x
x = 61,309,002,211.13/316,235.81 - Step 6: Final answer
x = 193,871.15
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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.