Finding the Fourth Proportional to 417,134.51, 625,761.28 and 128,970.95
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Solution
The fourth proportional to 417,134.51, 625,761.28 and 128,970.95 is: 193,474.82
Step by Step Solution
- Step 1: Write the proportion equation
417,134.51 : 625,761.28 = 128,970.95 : x - Step 2: Convert to fraction form
417,134.51/625,761.28 = 128,970.95/x - Step 3: Cross multiply
417,134.51x = 625,761.28 × 128,970.95 - Step 4: Simplify right side
417,134.51x = 80,705,022,981.15 - Step 5: Solve for x
x = 80,705,022,981.15/417,134.51 - Step 6: Final answer
x = 193,474.82
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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.