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Finding the Fourth Proportional to 396,305.68, 593,443.60 and 218,615.20

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Solution

The fourth proportional to 396,305.68, 593,443.60 and 218,615.20 is: 327,362.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,305.68 : 593,443.60 = 218,615.20 : x
  2. Step 2: Convert to fraction form
    396,305.68/593,443.60 = 218,615.20/x
  3. Step 3: Cross multiply
    396,305.68x = 593,443.60 × 218,615.20
  4. Step 4: Simplify right side
    396,305.68x = 129,735,791,302.72
  5. Step 5: Solve for x
    x = 129,735,791,302.72/396,305.68
  6. Step 6: Final answer
    x = 327,362.94

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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.