Home / 280,558.20-420,375.60-162,022.80

Finding the Fourth Proportional to 280,558.20, 420,375.60 and 162,022.80

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Solution

The fourth proportional to 280,558.20, 420,375.60 and 162,022.80 is: 242,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,558.20 : 420,375.60 = 162,022.80 : x
  2. Step 2: Convert to fraction form
    280,558.20/420,375.60 = 162,022.80/x
  3. Step 3: Cross multiply
    280,558.20x = 420,375.60 × 162,022.80
  4. Step 4: Simplify right side
    280,558.20x = 68,110,431,763.68
  5. Step 5: Solve for x
    x = 68,110,431,763.68/280,558.20
  6. Step 6: Final answer
    x = 242,767.57

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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.