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Finding the Fourth Proportional to 422,367.60, 582,865.56 and 231,392.88

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Solution

The fourth proportional to 422,367.60, 582,865.56 and 231,392.88 is: 319,321.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,367.60 : 582,865.56 = 231,392.88 : x
  2. Step 2: Convert to fraction form
    422,367.60/582,865.56 = 231,392.88/x
  3. Step 3: Cross multiply
    422,367.60x = 582,865.56 × 231,392.88
  4. Step 4: Simplify right side
    422,367.60x = 134,870,940,581.21
  5. Step 5: Solve for x
    x = 134,870,940,581.21/422,367.60
  6. Step 6: Final answer
    x = 319,321.23

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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.