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Finding the Fourth Proportional to 391,759.60, 540,620.52 and 228,446.56

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Solution

The fourth proportional to 391,759.60, 540,620.52 and 228,446.56 is: 315,251.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,759.60 : 540,620.52 = 228,446.56 : x
  2. Step 2: Convert to fraction form
    391,759.60/540,620.52 = 228,446.56/x
  3. Step 3: Cross multiply
    391,759.60x = 540,620.52 × 228,446.56
  4. Step 4: Simplify right side
    391,759.60x = 123,502,898,059.41
  5. Step 5: Solve for x
    x = 123,502,898,059.41/391,759.60
  6. Step 6: Final answer
    x = 315,251.75

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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.