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Finding the Fourth Proportional to 281,587.97, 422,383.35 and 71,226.11

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Solution

The fourth proportional to 281,587.97, 422,383.35 and 71,226.11 is: 106,839.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,587.97 : 422,383.35 = 71,226.11 : x
  2. Step 2: Convert to fraction form
    281,587.97/422,383.35 = 71,226.11/x
  3. Step 3: Cross multiply
    281,587.97x = 422,383.35 × 71,226.11
  4. Step 4: Simplify right side
    281,587.97x = 30,084,722,949.27
  5. Step 5: Solve for x
    x = 30,084,722,949.27/281,587.97
  6. Step 6: Final answer
    x = 106,839.52

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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.