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Finding the Fourth Proportional to 422,216.88, 582,660.20 and 228,626.72

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Solution

The fourth proportional to 422,216.88, 582,660.20 and 228,626.72 is: 315,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,216.88 : 582,660.20 = 228,626.72 : x
  2. Step 2: Convert to fraction form
    422,216.88/582,660.20 = 228,626.72/x
  3. Step 3: Cross multiply
    422,216.88x = 582,660.20 × 228,626.72
  4. Step 4: Simplify right side
    422,216.88x = 133,211,690,400.54
  5. Step 5: Solve for x
    x = 133,211,690,400.54/422,216.88
  6. Step 6: Final answer
    x = 315,505.36

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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.