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Finding the Fourth Proportional to 381,280.50, 571,920.75 and 100,797.75

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Solution

The fourth proportional to 381,280.50, 571,920.75 and 100,797.75 is: 151,196.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,280.50 : 571,920.75 = 100,797.75 : x
  2. Step 2: Convert to fraction form
    381,280.50/571,920.75 = 100,797.75/x
  3. Step 3: Cross multiply
    381,280.50x = 571,920.75 × 100,797.75
  4. Step 4: Simplify right side
    381,280.50x = 57,648,324,778.31
  5. Step 5: Solve for x
    x = 57,648,324,778.31/381,280.50
  6. Step 6: Final answer
    x = 151,196.63

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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.