Home / 381,115.20-525,971.28-211,404

Finding the Fourth Proportional to 381,115.20, 525,971.28 and 211,404

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Solution

The fourth proportional to 381,115.20, 525,971.28 and 211,404 is: 291,755.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,115.20 : 525,971.28 = 211,404 : x
  2. Step 2: Convert to fraction form
    381,115.20/525,971.28 = 211,404/x
  3. Step 3: Cross multiply
    381,115.20x = 525,971.28 × 211,404
  4. Step 4: Simplify right side
    381,115.20x = 111,192,432,477.12
  5. Step 5: Solve for x
    x = 111,192,432,477.12/381,115.20
  6. Step 6: Final answer
    x = 291,755.44

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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.