Finding the Fourth Proportional to 416,720.97, 625,141.05 and 128,556.99
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Solution
The fourth proportional to 416,720.97, 625,141.05 and 128,556.99 is: 192,853.87
Step by Step Solution
- Step 1: Write the proportion equation
416,720.97 : 625,141.05 = 128,556.99 : x - Step 2: Convert to fraction form
416,720.97/625,141.05 = 128,556.99/x - Step 3: Cross multiply
416,720.97x = 625,141.05 × 128,556.99 - Step 4: Simplify right side
416,720.97x = 80,366,251,713.44 - Step 5: Solve for x
x = 80,366,251,713.44/416,720.97 - Step 6: Final answer
x = 192,853.87
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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.