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Finding the Fourth Proportional to 281,519.75, 422,279.63 and 71,157.69

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Solution

The fourth proportional to 281,519.75, 422,279.63 and 71,157.69 is: 106,736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,519.75 : 422,279.63 = 71,157.69 : x
  2. Step 2: Convert to fraction form
    281,519.75/422,279.63 = 71,157.69/x
  3. Step 3: Cross multiply
    281,519.75x = 422,279.63 × 71,157.69
  4. Step 4: Simplify right side
    281,519.75x = 30,048,442,915.91
  5. Step 5: Solve for x
    x = 30,048,442,915.91/281,519.75
  6. Step 6: Final answer
    x = 106,736.54

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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.