Home / 280,601.20-420,440.10-162,065.80

Finding the Fourth Proportional to 280,601.20, 420,440.10 and 162,065.80

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Solution

The fourth proportional to 280,601.20, 420,440.10 and 162,065.80 is: 242,832.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,601.20 : 420,440.10 = 162,065.80 : x
  2. Step 2: Convert to fraction form
    280,601.20/420,440.10 = 162,065.80/x
  3. Step 3: Cross multiply
    280,601.20x = 420,440.10 × 162,065.80
  4. Step 4: Simplify right side
    280,601.20x = 68,138,961,158.58
  5. Step 5: Solve for x
    x = 68,138,961,158.58/280,601.20
  6. Step 6: Final answer
    x = 242,832.04

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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.