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Finding the Fourth Proportional to 396,052.30, 594,078.45 and 218,905.30

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Solution

The fourth proportional to 396,052.30, 594,078.45 and 218,905.30 is: 328,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,052.30 : 594,078.45 = 218,905.30 : x
  2. Step 2: Convert to fraction form
    396,052.30/594,078.45 = 218,905.30/x
  3. Step 3: Cross multiply
    396,052.30x = 594,078.45 × 218,905.30
  4. Step 4: Simplify right side
    396,052.30x = 130,046,921,320.79
  5. Step 5: Solve for x
    x = 130,046,921,320.79/396,052.30
  6. Step 6: Final answer
    x = 328,357.95

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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.