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Finding the Fourth Proportional to 217,854.83, 300,667.85 and 122,361.52

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Solution

The fourth proportional to 217,854.83, 300,667.85 and 122,361.52 is: 168,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,854.83 : 300,667.85 = 122,361.52 : x
  2. Step 2: Convert to fraction form
    217,854.83/300,667.85 = 122,361.52/x
  3. Step 3: Cross multiply
    217,854.83x = 300,667.85 × 122,361.52
  4. Step 4: Simplify right side
    217,854.83x = 36,790,175,141.13
  5. Step 5: Solve for x
    x = 36,790,175,141.13/217,854.83
  6. Step 6: Final answer
    x = 168,874.73

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1.5x scale

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.