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Finding the Fourth Proportional to 396,768.50, 547,708.05 and 267,881.57

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Solution

The fourth proportional to 396,768.50, 547,708.05 and 267,881.57 is: 369,789.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,768.50 : 547,708.05 = 267,881.57 : x
  2. Step 2: Convert to fraction form
    396,768.50/547,708.05 = 267,881.57/x
  3. Step 3: Cross multiply
    396,768.50x = 547,708.05 × 267,881.57
  4. Step 4: Simplify right side
    396,768.50x = 146,720,892,335.64
  5. Step 5: Solve for x
    x = 146,720,892,335.64/396,768.50
  6. Step 6: Final answer
    x = 369,789.67

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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.