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Finding the Fourth Proportional to 499,560.28, 689,391.68 and 270,115.97

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Solution

The fourth proportional to 499,560.28, 689,391.68 and 270,115.97 is: 372,759.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,560.28 : 689,391.68 = 270,115.97 : x
  2. Step 2: Convert to fraction form
    499,560.28/689,391.68 = 270,115.97/x
  3. Step 3: Cross multiply
    499,560.28x = 689,391.68 × 270,115.97
  4. Step 4: Simplify right side
    499,560.28x = 186,215,697,555.59
  5. Step 5: Solve for x
    x = 186,215,697,555.59/499,560.28
  6. Step 6: Final answer
    x = 372,759.22

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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.