Home / 281,350.46-422,067.20-81,644.90

Finding the Fourth Proportional to 281,350.46, 422,067.20 and 81,644.90

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Solution

The fourth proportional to 281,350.46, 422,067.20 and 81,644.90 is: 122,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,350.46 : 422,067.20 = 81,644.90 : x
  2. Step 2: Convert to fraction form
    281,350.46/422,067.20 = 81,644.90/x
  3. Step 3: Cross multiply
    281,350.46x = 422,067.20 × 81,644.90
  4. Step 4: Simplify right side
    281,350.46x = 34,459,632,431.06
  5. Step 5: Solve for x
    x = 34,459,632,431.06/281,350.46
  6. Step 6: Final answer
    x = 122,479.39

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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.