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Finding the Fourth Proportional to 381,491.88, 526,434.30 and 238,243.38

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Solution

The fourth proportional to 381,491.88, 526,434.30 and 238,243.38 is: 328,760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,491.88 : 526,434.30 = 238,243.38 : x
  2. Step 2: Convert to fraction form
    381,491.88/526,434.30 = 238,243.38/x
  3. Step 3: Cross multiply
    381,491.88x = 526,434.30 × 238,243.38
  4. Step 4: Simplify right side
    381,491.88x = 125,419,486,979.93
  5. Step 5: Solve for x
    x = 125,419,486,979.93/381,491.88
  6. Step 6: Final answer
    x = 328,760.57

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1.5x scale

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.