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Finding the Fourth Proportional to 381,791.88, 526,809.57 and 220,661.92

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Solution

The fourth proportional to 381,791.88, 526,809.57 and 220,661.92 is: 304,476.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,791.88 : 526,809.57 = 220,661.92 : x
  2. Step 2: Convert to fraction form
    381,791.88/526,809.57 = 220,661.92/x
  3. Step 3: Cross multiply
    381,791.88x = 526,809.57 × 220,661.92
  4. Step 4: Simplify right side
    381,791.88x = 116,246,812,262.83
  5. Step 5: Solve for x
    x = 116,246,812,262.83/381,791.88
  6. Step 6: Final answer
    x = 304,476.91

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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.