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Finding the Fourth Proportional to 238,894.92, 358,375.32 and 81,081

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Solution

The fourth proportional to 238,894.92, 358,375.32 and 81,081 is: 121,632.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,894.92 : 358,375.32 = 81,081 : x
  2. Step 2: Convert to fraction form
    238,894.92/358,375.32 = 81,081/x
  3. Step 3: Cross multiply
    238,894.92x = 358,375.32 × 81,081
  4. Step 4: Simplify right side
    238,894.92x = 29,057,429,320.92
  5. Step 5: Solve for x
    x = 29,057,429,320.92/238,894.92
  6. Step 6: Final answer
    x = 121,632.68

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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.