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Finding the Fourth Proportional to 220,750.20, 331,125.30 and 54,538.20

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Solution

The fourth proportional to 220,750.20, 331,125.30 and 54,538.20 is: 81,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,750.20 : 331,125.30 = 54,538.20 : x
  2. Step 2: Convert to fraction form
    220,750.20/331,125.30 = 54,538.20/x
  3. Step 3: Cross multiply
    220,750.20x = 331,125.30 × 54,538.20
  4. Step 4: Simplify right side
    220,750.20x = 18,058,977,836.46
  5. Step 5: Solve for x
    x = 18,058,977,836.46/220,750.20
  6. Step 6: Final answer
    x = 81,807.30

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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.