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Finding the Fourth Proportional to 250,339.92, 375,532.92 and 81,861.12

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Solution

The fourth proportional to 250,339.92, 375,532.92 and 81,861.12 is: 122,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,339.92 : 375,532.92 = 81,861.12 : x
  2. Step 2: Convert to fraction form
    250,339.92/375,532.92 = 81,861.12/x
  3. Step 3: Cross multiply
    250,339.92x = 375,532.92 × 81,861.12
  4. Step 4: Simplify right side
    250,339.92x = 30,741,545,428.07
  5. Step 5: Solve for x
    x = 30,741,545,428.07/250,339.92
  6. Step 6: Final answer
    x = 122,799.21

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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.