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Finding the Fourth Proportional to 422,279.55, 582,745.85 and 231,299.77

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Solution

The fourth proportional to 422,279.55, 582,745.85 and 231,299.77 is: 319,193.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,279.55 : 582,745.85 = 231,299.77 : x
  2. Step 2: Convert to fraction form
    422,279.55/582,745.85 = 231,299.77/x
  3. Step 3: Cross multiply
    422,279.55x = 582,745.85 × 231,299.77
  4. Step 4: Simplify right side
    422,279.55x = 134,788,981,073.45
  5. Step 5: Solve for x
    x = 134,788,981,073.45/422,279.55
  6. Step 6: Final answer
    x = 319,193.72

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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.