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Finding the Fourth Proportional to 499,778.28, 689,691.96 and 270,335.70

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Solution

The fourth proportional to 499,778.28, 689,691.96 and 270,335.70 is: 373,062.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,778.28 : 689,691.96 = 270,335.70 : x
  2. Step 2: Convert to fraction form
    499,778.28/689,691.96 = 270,335.70/x
  3. Step 3: Cross multiply
    499,778.28x = 689,691.96 × 270,335.70
  4. Step 4: Simplify right side
    499,778.28x = 186,448,358,790.97
  5. Step 5: Solve for x
    x = 186,448,358,790.97/499,778.28
  6. Step 6: Final answer
    x = 373,062.15

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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.