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Finding the Fourth Proportional to 220,902, 331,353 and 54,690

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Solution

The fourth proportional to 220,902, 331,353 and 54,690 is: 82,035

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,902 : 331,353 = 54,690 : x
  2. Step 2: Convert to fraction form
    220,902/331,353 = 54,690/x
  3. Step 3: Cross multiply
    220,902x = 331,353 × 54,690
  4. Step 4: Simplify right side
    220,902x = 18,121,695,570
  5. Step 5: Solve for x
    x = 18,121,695,570/220,902
  6. Step 6: Final answer
    x = 82,035

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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.