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Finding the Fourth Proportional to 381,570.62, 526,541.11 and 211,791.38

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Solution

The fourth proportional to 381,570.62, 526,541.11 and 211,791.38 is: 292,257.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,570.62 : 526,541.11 = 211,791.38 : x
  2. Step 2: Convert to fraction form
    381,570.62/526,541.11 = 211,791.38/x
  3. Step 3: Cross multiply
    381,570.62x = 526,541.11 × 211,791.38
  4. Step 4: Simplify right side
    381,570.62x = 111,516,865,151.45
  5. Step 5: Solve for x
    x = 111,516,865,151.45/381,570.62
  6. Step 6: Final answer
    x = 292,257.48

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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.