Finding the Fourth Proportional to 316,276.31, 474,414.91 and 129,287.81
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Solution
The fourth proportional to 316,276.31, 474,414.91 and 129,287.81 is: 193,931.90
Step by Step Solution
- Step 1: Write the proportion equation
316,276.31 : 474,414.91 = 129,287.81 : x - Step 2: Convert to fraction form
316,276.31/474,414.91 = 129,287.81/x - Step 3: Cross multiply
316,276.31x = 474,414.91 × 129,287.81 - Step 4: Simplify right side
316,276.31x = 61,336,065,608.06 - Step 5: Solve for x
x = 61,336,065,608.06/316,276.31 - Step 6: Final answer
x = 193,931.90
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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.