Finding the Fourth Proportional to 640,134.76, 960,251.12 and 190,821.28
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Solution
The fourth proportional to 640,134.76, 960,251.12 and 190,821.28 is: 286,246.52
Step by Step Solution
- Step 1: Write the proportion equation
640,134.76 : 960,251.12 = 190,821.28 : x - Step 2: Convert to fraction form
640,134.76/960,251.12 = 190,821.28/x - Step 3: Cross multiply
640,134.76x = 960,251.12 × 190,821.28 - Step 4: Simplify right side
640,134.76x = 183,236,347,839.83 - Step 5: Solve for x
x = 183,236,347,839.83/640,134.76 - Step 6: Final answer
x = 286,246.52
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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.