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Finding the Fourth Proportional to 281,915.20, 422,060.52 and 187,239.96

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Solution

The fourth proportional to 281,915.20, 422,060.52 and 187,239.96 is: 280,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,915.20 : 422,060.52 = 187,239.96 : x
  2. Step 2: Convert to fraction form
    281,915.20/422,060.52 = 187,239.96/x
  3. Step 3: Cross multiply
    281,915.20x = 422,060.52 × 187,239.96
  4. Step 4: Simplify right side
    281,915.20x = 79,026,594,882.38
  5. Step 5: Solve for x
    x = 79,026,594,882.38/281,915.20
  6. Step 6: Final answer
    x = 280,320.45

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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.