Home / 281,306.80-422,001.24-81,628.30

Finding the Fourth Proportional to 281,306.80, 422,001.24 and 81,628.30

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Solution

The fourth proportional to 281,306.80, 422,001.24 and 81,628.30 is: 122,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,306.80 : 422,001.24 = 81,628.30 : x
  2. Step 2: Convert to fraction form
    281,306.80/422,001.24 = 81,628.30/x
  3. Step 3: Cross multiply
    281,306.80x = 422,001.24 × 81,628.30
  4. Step 4: Simplify right side
    281,306.80x = 34,447,243,819.09
  5. Step 5: Solve for x
    x = 34,447,243,819.09/281,306.80
  6. Step 6: Final answer
    x = 122,454.36

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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.