Finding the Fourth Proportional to 416,718.97, 625,138.04 and 128,554.99
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Solution
The fourth proportional to 416,718.97, 625,138.04 and 128,554.99 is: 192,850.87
Step by Step Solution
- Step 1: Write the proportion equation
416,718.97 : 625,138.04 = 128,554.99 : x - Step 2: Convert to fraction form
416,718.97/625,138.04 = 128,554.99/x - Step 3: Cross multiply
416,718.97x = 625,138.04 × 128,554.99 - Step 4: Simplify right side
416,718.97x = 80,364,614,480.82 - Step 5: Solve for x
x = 80,364,614,480.82/416,718.97 - Step 6: Final answer
x = 192,850.87
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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.