Home / 396,931,172.97-547,765,469.06-220,715,384.79

Finding the Fourth Proportional to 396,931,172.97, 547,765,469.06 and 220,715,384.79

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Solution

The fourth proportional to 396,931,172.97, 547,765,469.06 and 220,715,384.79 is: 304,587,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,931,172.97 : 547,765,469.06 = 220,715,384.79 : x
  2. Step 2: Convert to fraction form
    396,931,172.97/547,765,469.06 = 220,715,384.79/x
  3. Step 3: Cross multiply
    396,931,172.97x = 547,765,469.06 × 220,715,384.79
  4. Step 4: Simplify right side
    396,931,172.97x = 120,900,266,277,149,152
  5. Step 5: Solve for x
    x = 120,900,266,277,149,152/396,931,172.97
  6. Step 6: Final answer
    x = 304,587,481.43

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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.