Home / 327,807,007.20-491,699,138.40-82,165,791.60

Finding the Fourth Proportional to 327,807,007.20, 491,699,138.40 and 82,165,791.60

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Solution

The fourth proportional to 327,807,007.20, 491,699,138.40 and 82,165,791.60 is: 123,245,836.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,807,007.20 : 491,699,138.40 = 82,165,791.60 : x
  2. Step 2: Convert to fraction form
    327,807,007.20/491,699,138.40 = 82,165,791.60/x
  3. Step 3: Cross multiply
    327,807,007.20x = 491,699,138.40 × 82,165,791.60
  4. Step 4: Simplify right side
    327,807,007.20x = 40,400,848,935,673,952
  5. Step 5: Solve for x
    x = 40,400,848,935,673,952/327,807,007.20
  6. Step 6: Final answer
    x = 123,245,836.87

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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.