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Finding the Fourth Proportional to 422,027.38, 582,397.79 and 231,040.79

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Solution

The fourth proportional to 422,027.38, 582,397.79 and 231,040.79 is: 318,836.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,027.38 : 582,397.79 = 231,040.79 : x
  2. Step 2: Convert to fraction form
    422,027.38/582,397.79 = 231,040.79/x
  3. Step 3: Cross multiply
    422,027.38x = 582,397.79 × 231,040.79
  4. Step 4: Simplify right side
    422,027.38x = 134,557,645,495.85
  5. Step 5: Solve for x
    x = 134,557,645,495.85/422,027.38
  6. Step 6: Final answer
    x = 318,836.29

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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.