Home / 280,079.28-386,542.62-159,238.80

Finding the Fourth Proportional to 280,079.28, 386,542.62 and 159,238.80

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Solution

The fourth proportional to 280,079.28, 386,542.62 and 159,238.80 is: 219,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,079.28 : 386,542.62 = 159,238.80 : x
  2. Step 2: Convert to fraction form
    280,079.28/386,542.62 = 159,238.80/x
  3. Step 3: Cross multiply
    280,079.28x = 386,542.62 × 159,238.80
  4. Step 4: Simplify right side
    280,079.28x = 61,552,582,957.66
  5. Step 5: Solve for x
    x = 61,552,582,957.66/280,079.28
  6. Step 6: Final answer
    x = 219,768.43

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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.