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Finding the Fourth Proportional to 281,937.22, 422,905.47 and 68,704.90

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Solution

The fourth proportional to 281,937.22, 422,905.47 and 68,704.90 is: 103,057.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,937.22 : 422,905.47 = 68,704.90 : x
  2. Step 2: Convert to fraction form
    281,937.22/422,905.47 = 68,704.90/x
  3. Step 3: Cross multiply
    281,937.22x = 422,905.47 × 68,704.90
  4. Step 4: Simplify right side
    281,937.22x = 29,055,678,025.80
  5. Step 5: Solve for x
    x = 29,055,678,025.80/281,937.22
  6. Step 6: Final answer
    x = 103,057.26

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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.