Home / 381,979.20-572,550.30-192,136.80

Finding the Fourth Proportional to 381,979.20, 572,550.30 and 192,136.80

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Solution

The fourth proportional to 381,979.20, 572,550.30 and 192,136.80 is: 287,994.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,979.20 : 572,550.30 = 192,136.80 : x
  2. Step 2: Convert to fraction form
    381,979.20/572,550.30 = 192,136.80/x
  3. Step 3: Cross multiply
    381,979.20x = 572,550.30 × 192,136.80
  4. Step 4: Simplify right side
    381,979.20x = 110,007,982,481.04
  5. Step 5: Solve for x
    x = 110,007,982,481.04/381,979.20
  6. Step 6: Final answer
    x = 287,994.69

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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.