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Finding the Fourth Proportional to 396,003.60, 593,890.20 and 218,595.60

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Solution

The fourth proportional to 396,003.60, 593,890.20 and 218,595.60 is: 327,829.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,003.60 : 593,890.20 = 218,595.60 : x
  2. Step 2: Convert to fraction form
    396,003.60/593,890.20 = 218,595.60/x
  3. Step 3: Cross multiply
    396,003.60x = 593,890.20 × 218,595.60
  4. Step 4: Simplify right side
    396,003.60x = 129,821,784,603.12
  5. Step 5: Solve for x
    x = 129,821,784,603.12/396,003.60
  6. Step 6: Final answer
    x = 327,829.81

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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.