Home / 280,002.24-420,024.42-80,321.04

Finding the Fourth Proportional to 280,002.24, 420,024.42 and 80,321.04

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Solution

The fourth proportional to 280,002.24, 420,024.42 and 80,321.04 is: 120,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,002.24 : 420,024.42 = 80,321.04 : x
  2. Step 2: Convert to fraction form
    280,002.24/420,024.42 = 80,321.04/x
  3. Step 3: Cross multiply
    280,002.24x = 420,024.42 × 80,321.04
  4. Step 4: Simplify right side
    280,002.24x = 33,736,798,239.80
  5. Step 5: Solve for x
    x = 33,736,798,239.80/280,002.24
  6. Step 6: Final answer
    x = 120,487.60

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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.