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Finding the Fourth Proportional to 381,468.88, 526,402.56 and 238,220.38

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Solution

The fourth proportional to 381,468.88, 526,402.56 and 238,220.38 is: 328,728.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,468.88 : 526,402.56 = 238,220.38 : x
  2. Step 2: Convert to fraction form
    381,468.88/526,402.56 = 238,220.38/x
  3. Step 3: Cross multiply
    381,468.88x = 526,402.56 × 238,220.38
  4. Step 4: Simplify right side
    381,468.88x = 125,399,817,876.17
  5. Step 5: Solve for x
    x = 125,399,817,876.17/381,468.88
  6. Step 6: Final answer
    x = 328,728.83

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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.