Home / 280,192.26-420,243.28-80,467.22

Finding the Fourth Proportional to 280,192.26, 420,243.28 and 80,467.22

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Solution

The fourth proportional to 280,192.26, 420,243.28 and 80,467.22 is: 120,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,192.26 : 420,243.28 = 80,467.22 : x
  2. Step 2: Convert to fraction form
    280,192.26/420,243.28 = 80,467.22/x
  3. Step 3: Cross multiply
    280,192.26x = 420,243.28 × 80,467.22
  4. Step 4: Simplify right side
    280,192.26x = 33,815,809,616.47
  5. Step 5: Solve for x
    x = 33,815,809,616.47/280,192.26
  6. Step 6: Final answer
    x = 120,687.88

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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.