Home / 280,629.20-387,282.12-159,772.88

Finding the Fourth Proportional to 280,629.20, 387,282.12 and 159,772.88

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Solution

The fourth proportional to 280,629.20, 387,282.12 and 159,772.88 is: 220,494.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629.20 : 387,282.12 = 159,772.88 : x
  2. Step 2: Convert to fraction form
    280,629.20/387,282.12 = 159,772.88/x
  3. Step 3: Cross multiply
    280,629.20x = 387,282.12 × 159,772.88
  4. Step 4: Simplify right side
    280,629.20x = 61,877,179,684.91
  5. Step 5: Solve for x
    x = 61,877,179,684.91/280,629.20
  6. Step 6: Final answer
    x = 220,494.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.