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Finding the Fourth Proportional to 279,717.90, 418,592.70 and 256,098.30

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Solution

The fourth proportional to 279,717.90, 418,592.70 and 256,098.30 is: 383,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,717.90 : 418,592.70 = 256,098.30 : x
  2. Step 2: Convert to fraction form
    279,717.90/418,592.70 = 256,098.30/x
  3. Step 3: Cross multiply
    279,717.90x = 418,592.70 × 256,098.30
  4. Step 4: Simplify right side
    279,717.90x = 107,200,878,862.41
  5. Step 5: Solve for x
    x = 107,200,878,862.41/279,717.90
  6. Step 6: Final answer
    x = 383,246.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.