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Finding the Fourth Proportional to 221,634.56, 332,498.55 and 71,863.17

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Solution

The fourth proportional to 221,634.56, 332,498.55 and 71,863.17 is: 107,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,634.56 : 332,498.55 = 71,863.17 : x
  2. Step 2: Convert to fraction form
    221,634.56/332,498.55 = 71,863.17/x
  3. Step 3: Cross multiply
    221,634.56x = 332,498.55 × 71,863.17
  4. Step 4: Simplify right side
    221,634.56x = 23,894,400,312.09
  5. Step 5: Solve for x
    x = 23,894,400,312.09/221,634.56
  6. Step 6: Final answer
    x = 107,809.90

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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.