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Finding the Fourth Proportional to 256,468.80, 385,359.30 and 227,600.40

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Solution

The fourth proportional to 256,468.80, 385,359.30 and 227,600.40 is: 341,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,468.80 : 385,359.30 = 227,600.40 : x
  2. Step 2: Convert to fraction form
    256,468.80/385,359.30 = 227,600.40/x
  3. Step 3: Cross multiply
    256,468.80x = 385,359.30 × 227,600.40
  4. Step 4: Simplify right side
    256,468.80x = 87,707,930,823.72
  5. Step 5: Solve for x
    x = 87,707,930,823.72/256,468.80
  6. Step 6: Final answer
    x = 341,982.85

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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.