Home / 381,815.90-572,723.85-213,163.10

Finding the Fourth Proportional to 381,815.90, 572,723.85 and 213,163.10

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Solution

The fourth proportional to 381,815.90, 572,723.85 and 213,163.10 is: 319,744.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,815.90 : 572,723.85 = 213,163.10 : x
  2. Step 2: Convert to fraction form
    381,815.90/572,723.85 = 213,163.10/x
  3. Step 3: Cross multiply
    381,815.90x = 572,723.85 × 213,163.10
  4. Step 4: Simplify right side
    381,815.90x = 122,083,591,309.94
  5. Step 5: Solve for x
    x = 122,083,591,309.94/381,815.90
  6. Step 6: Final answer
    x = 319,744.65

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Similar ratio
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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.