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Finding the Fourth Proportional to 381,956.49, 526,915.67 and 254,468.97

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Solution

The fourth proportional to 381,956.49, 526,915.67 and 254,468.97 is: 351,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,956.49 : 526,915.67 = 254,468.97 : x
  2. Step 2: Convert to fraction form
    381,956.49/526,915.67 = 254,468.97/x
  3. Step 3: Cross multiply
    381,956.49x = 526,915.67 × 254,468.97
  4. Step 4: Simplify right side
    381,956.49x = 134,083,686,549.42
  5. Step 5: Solve for x
    x = 134,083,686,549.42/381,956.49
  6. Step 6: Final answer
    x = 351,044.40

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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.