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Finding the Fourth Proportional to 220,898, 331,347 and 54,686

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Solution

The fourth proportional to 220,898, 331,347 and 54,686 is: 82,029

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,898 : 331,347 = 54,686 : x
  2. Step 2: Convert to fraction form
    220,898/331,347 = 54,686/x
  3. Step 3: Cross multiply
    220,898x = 331,347 × 54,686
  4. Step 4: Simplify right side
    220,898x = 18,120,042,042
  5. Step 5: Solve for x
    x = 18,120,042,042/220,898
  6. Step 6: Final answer
    x = 82,029

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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.