Home / 217,865.80-300,654.97-122,372.57

Finding the Fourth Proportional to 217,865.80, 300,654.97 and 122,372.57

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Solution

The fourth proportional to 217,865.80, 300,654.97 and 122,372.57 is: 168,874.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,865.80 : 300,654.97 = 122,372.57 : x
  2. Step 2: Convert to fraction form
    217,865.80/300,654.97 = 122,372.57/x
  3. Step 3: Cross multiply
    217,865.80x = 300,654.97 × 122,372.57
  4. Step 4: Simplify right side
    217,865.80x = 36,791,919,858.90
  5. Step 5: Solve for x
    x = 36,791,919,858.90/217,865.80
  6. Step 6: Final answer
    x = 168,874.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.