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Finding the Fourth Proportional to 384,414.80, 576,562.87 and 128,251.90

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Solution

The fourth proportional to 384,414.80, 576,562.87 and 128,251.90 is: 192,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,414.80 : 576,562.87 = 128,251.90 : x
  2. Step 2: Convert to fraction form
    384,414.80/576,562.87 = 128,251.90/x
  3. Step 3: Cross multiply
    384,414.80x = 576,562.87 × 128,251.90
  4. Step 4: Simplify right side
    384,414.80x = 73,945,280,022.88
  5. Step 5: Solve for x
    x = 73,945,280,022.88/384,414.80
  6. Step 6: Final answer
    x = 192,358.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.