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Finding the Fourth Proportional to 396,049.80, 594,074.70 and 218,902.80

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Solution

The fourth proportional to 396,049.80, 594,074.70 and 218,902.80 is: 328,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,049.80 : 594,074.70 = 218,902.80 : x
  2. Step 2: Convert to fraction form
    396,049.80/594,074.70 = 218,902.80/x
  3. Step 3: Cross multiply
    396,049.80x = 594,074.70 × 218,902.80
  4. Step 4: Simplify right side
    396,049.80x = 130,044,615,239.16
  5. Step 5: Solve for x
    x = 130,044,615,239.16/396,049.80
  6. Step 6: Final answer
    x = 328,354.20

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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.