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Finding the Fourth Proportional to 381,425.41, 526,391.65 and 211,659.52

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Solution

The fourth proportional to 381,425.41, 526,391.65 and 211,659.52 is: 292,103.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,425.41 : 526,391.65 = 211,659.52 : x
  2. Step 2: Convert to fraction form
    381,425.41/526,391.65 = 211,659.52/x
  3. Step 3: Cross multiply
    381,425.41x = 526,391.65 × 211,659.52
  4. Step 4: Simplify right side
    381,425.41x = 111,415,800,809.90
  5. Step 5: Solve for x
    x = 111,415,800,809.90/381,425.41
  6. Step 6: Final answer
    x = 292,103.78

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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.