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Finding the Fourth Proportional to 279,793.14, 419,758.90 and 90,273.52

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Solution

The fourth proportional to 279,793.14, 419,758.90 and 90,273.52 is: 135,432.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,793.14 : 419,758.90 = 90,273.52 : x
  2. Step 2: Convert to fraction form
    279,793.14/419,758.90 = 90,273.52/x
  3. Step 3: Cross multiply
    279,793.14x = 419,758.90 × 90,273.52
  4. Step 4: Simplify right side
    279,793.14x = 37,893,114,007.24
  5. Step 5: Solve for x
    x = 37,893,114,007.24/279,793.14
  6. Step 6: Final answer
    x = 135,432.61

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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.