Finding the Fourth Proportional to 229,291.75, 316,422.62 and 128,689.75
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Solution
The fourth proportional to 229,291.75, 316,422.62 and 128,689.75 is: 177,591.86
Step by Step Solution
- Step 1: Write the proportion equation
229,291.75 : 316,422.62 = 128,689.75 : x - Step 2: Convert to fraction form
229,291.75/316,422.62 = 128,689.75/x - Step 3: Cross multiply
229,291.75x = 316,422.62 × 128,689.75 - Step 4: Simplify right side
229,291.75x = 40,720,347,862.15 - Step 5: Solve for x
x = 40,720,347,862.15/229,291.75 - Step 6: Final answer
x = 177,591.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.