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Finding the Fourth Proportional to 379,540, 523,626.72 and 292,351.52

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Solution

The fourth proportional to 379,540, 523,626.72 and 292,351.52 is: 403,338.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,540 : 523,626.72 = 292,351.52 : x
  2. Step 2: Convert to fraction form
    379,540/523,626.72 = 292,351.52/x
  3. Step 3: Cross multiply
    379,540x = 523,626.72 × 292,351.52
  4. Step 4: Simplify right side
    379,540x = 153,083,067,504.61
  5. Step 5: Solve for x
    x = 153,083,067,504.61/379,540
  6. Step 6: Final answer
    x = 403,338.43

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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.