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Finding the Fourth Proportional to 279,956.40, 419,934.60 and 264,793.20

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Solution

The fourth proportional to 279,956.40, 419,934.60 and 264,793.20 is: 397,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,956.40 : 419,934.60 = 264,793.20 : x
  2. Step 2: Convert to fraction form
    279,956.40/419,934.60 = 264,793.20/x
  3. Step 3: Cross multiply
    279,956.40x = 419,934.60 × 264,793.20
  4. Step 4: Simplify right side
    279,956.40x = 111,195,826,524.72
  5. Step 5: Solve for x
    x = 111,195,826,524.72/279,956.40
  6. Step 6: Final answer
    x = 397,189.80

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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.