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Finding the Fourth Proportional to 392,620.60, 541,819.02 and 222,857.56

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Solution

The fourth proportional to 392,620.60, 541,819.02 and 222,857.56 is: 307,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,620.60 : 541,819.02 = 222,857.56 : x
  2. Step 2: Convert to fraction form
    392,620.60/541,819.02 = 222,857.56/x
  3. Step 3: Cross multiply
    392,620.60x = 541,819.02 × 222,857.56
  4. Step 4: Simplify right side
    392,620.60x = 120,748,464,758.79
  5. Step 5: Solve for x
    x = 120,748,464,758.79/392,620.60
  6. Step 6: Final answer
    x = 307,544.90

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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.