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Finding the Fourth Proportional to 220,920.62, 331,374.33 and 61,006.28

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Solution

The fourth proportional to 220,920.62, 331,374.33 and 61,006.28 is: 91,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,920.62 : 331,374.33 = 61,006.28 : x
  2. Step 2: Convert to fraction form
    220,920.62/331,374.33 = 61,006.28/x
  3. Step 3: Cross multiply
    220,920.62x = 331,374.33 × 61,006.28
  4. Step 4: Simplify right side
    220,920.62x = 20,215,913,503.92
  5. Step 5: Solve for x
    x = 20,215,913,503.92/220,920.62
  6. Step 6: Final answer
    x = 91,507.59

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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.