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Finding the Fourth Proportional to 281,521.44, 422,284.96 and 71,159.44

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Solution

The fourth proportional to 281,521.44, 422,284.96 and 71,159.44 is: 106,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,521.44 : 422,284.96 = 71,159.44 : x
  2. Step 2: Convert to fraction form
    281,521.44/422,284.96 = 71,159.44/x
  3. Step 3: Cross multiply
    281,521.44x = 422,284.96 × 71,159.44
  4. Step 4: Simplify right side
    281,521.44x = 30,049,561,274.02
  5. Step 5: Solve for x
    x = 30,049,561,274.02/281,521.44
  6. Step 6: Final answer
    x = 106,739.87

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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.