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Finding the Fourth Proportional to 221,719.32, 332,755.56 and 115,134.12

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Solution

The fourth proportional to 221,719.32, 332,755.56 and 115,134.12 is: 172,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,719.32 : 332,755.56 = 115,134.12 : x
  2. Step 2: Convert to fraction form
    221,719.32/332,755.56 = 115,134.12/x
  3. Step 3: Cross multiply
    221,719.32x = 332,755.56 × 115,134.12
  4. Step 4: Simplify right side
    221,719.32x = 38,311,518,575.71
  5. Step 5: Solve for x
    x = 38,311,518,575.71/221,719.32
  6. Step 6: Final answer
    x = 172,792.87

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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.