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Finding the Fourth Proportional to 391,767.60, 540,631.56 and 228,454.56

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Solution

The fourth proportional to 391,767.60, 540,631.56 and 228,454.56 is: 315,262.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,767.60 : 540,631.56 = 228,454.56 : x
  2. Step 2: Convert to fraction form
    391,767.60/540,631.56 = 228,454.56/x
  3. Step 3: Cross multiply
    391,767.60x = 540,631.56 × 228,454.56
  4. Step 4: Simplify right side
    391,767.60x = 123,509,745,161.91
  5. Step 5: Solve for x
    x = 123,509,745,161.91/391,767.60
  6. Step 6: Final answer
    x = 315,262.79

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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.