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Finding the Fourth Proportional to 281,523.52, 422,287.98 and 71,161.39

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Solution

The fourth proportional to 281,523.52, 422,287.98 and 71,161.39 is: 106,742.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,523.52 : 422,287.98 = 71,161.39 : x
  2. Step 2: Convert to fraction form
    281,523.52/422,287.98 = 71,161.39/x
  3. Step 3: Cross multiply
    281,523.52x = 422,287.98 × 71,161.39
  4. Step 4: Simplify right side
    281,523.52x = 30,050,599,637.09
  5. Step 5: Solve for x
    x = 30,050,599,637.09/281,523.52
  6. Step 6: Final answer
    x = 106,742.77

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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.