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Finding the Fourth Proportional to 279,793.25, 419,771.61 and 90,249.42

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Solution

The fourth proportional to 279,793.25, 419,771.61 and 90,249.42 is: 135,400.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,793.25 : 419,771.61 = 90,249.42 : x
  2. Step 2: Convert to fraction form
    279,793.25/419,771.61 = 90,249.42/x
  3. Step 3: Cross multiply
    279,793.25x = 419,771.61 × 90,249.42
  4. Step 4: Simplify right side
    279,793.25x = 37,884,145,909.11
  5. Step 5: Solve for x
    x = 37,884,145,909.11/279,793.25
  6. Step 6: Final answer
    x = 135,400.50

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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.