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Finding the Fourth Proportional to 381,469.88, 526,403.94 and 238,221.38

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Solution

The fourth proportional to 381,469.88, 526,403.94 and 238,221.38 is: 328,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,469.88 : 526,403.94 = 238,221.38 : x
  2. Step 2: Convert to fraction form
    381,469.88/526,403.94 = 238,221.38/x
  3. Step 3: Cross multiply
    381,469.88x = 526,403.94 × 238,221.38
  4. Step 4: Simplify right side
    381,469.88x = 125,400,673,024.24
  5. Step 5: Solve for x
    x = 125,400,673,024.24/381,469.88
  6. Step 6: Final answer
    x = 328,730.21

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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.