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Finding the Fourth Proportional to 253,022.76, 379,521.18 and 75,531.24

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Solution

The fourth proportional to 253,022.76, 379,521.18 and 75,531.24 is: 113,292.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,022.76 : 379,521.18 = 75,531.24 : x
  2. Step 2: Convert to fraction form
    253,022.76/379,521.18 = 75,531.24/x
  3. Step 3: Cross multiply
    253,022.76x = 379,521.18 × 75,531.24
  4. Step 4: Simplify right side
    253,022.76x = 28,665,705,331.66
  5. Step 5: Solve for x
    x = 28,665,705,331.66/253,022.76
  6. Step 6: Final answer
    x = 113,292.99

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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.