Finding the Fourth Proportional to 394,937.12, 592,344.84 and 128,696.96
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Solution
The fourth proportional to 394,937.12, 592,344.84 and 128,696.96 is: 193,025.61
Step by Step Solution
- Step 1: Write the proportion equation
394,937.12 : 592,344.84 = 128,696.96 : x - Step 2: Convert to fraction form
394,937.12/592,344.84 = 128,696.96/x - Step 3: Cross multiply
394,937.12x = 592,344.84 × 128,696.96 - Step 4: Simplify right side
394,937.12x = 76,232,980,179.69 - Step 5: Solve for x
x = 76,232,980,179.69/394,937.12 - Step 6: Final answer
x = 193,025.61
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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.