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Finding the Fourth Proportional to 215,900.20, 323,850.30 and 75,640.60

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Solution

The fourth proportional to 215,900.20, 323,850.30 and 75,640.60 is: 113,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,900.20 : 323,850.30 = 75,640.60 : x
  2. Step 2: Convert to fraction form
    215,900.20/323,850.30 = 75,640.60/x
  3. Step 3: Cross multiply
    215,900.20x = 323,850.30 × 75,640.60
  4. Step 4: Simplify right side
    215,900.20x = 24,496,231,002.18
  5. Step 5: Solve for x
    x = 24,496,231,002.18/215,900.20
  6. Step 6: Final answer
    x = 113,460.90

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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.