Home / 280,657.20-420,691.74-130,773.92

Finding the Fourth Proportional to 280,657.20, 420,691.74 and 130,773.92

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Solution

The fourth proportional to 280,657.20, 420,691.74 and 130,773.92 is: 196,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,657.20 : 420,691.74 = 130,773.92 : x
  2. Step 2: Convert to fraction form
    280,657.20/420,691.74 = 130,773.92/x
  3. Step 3: Cross multiply
    280,657.20x = 420,691.74 × 130,773.92
  4. Step 4: Simplify right side
    280,657.20x = 55,015,507,951.42
  5. Step 5: Solve for x
    x = 55,015,507,951.42/280,657.20
  6. Step 6: Final answer
    x = 196,023.86

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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.