Home / 381,981.20-572,553.30-192,138.80

Finding the Fourth Proportional to 381,981.20, 572,553.30 and 192,138.80

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Solution

The fourth proportional to 381,981.20, 572,553.30 and 192,138.80 is: 287,997.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,981.20 : 572,553.30 = 192,138.80 : x
  2. Step 2: Convert to fraction form
    381,981.20/572,553.30 = 192,138.80/x
  3. Step 3: Cross multiply
    381,981.20x = 572,553.30 × 192,138.80
  4. Step 4: Simplify right side
    381,981.20x = 110,009,703,998.04
  5. Step 5: Solve for x
    x = 110,009,703,998.04/381,981.20
  6. Step 6: Final answer
    x = 287,997.69

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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.