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Finding the Fourth Proportional to 267,067,891.80, 400,601,837.70 and 198,193,138.20

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Solution

The fourth proportional to 267,067,891.80, 400,601,837.70 and 198,193,138.20 is: 297,289,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,067,891.80 : 400,601,837.70 = 198,193,138.20 : x
  2. Step 2: Convert to fraction form
    267,067,891.80/400,601,837.70 = 198,193,138.20/x
  3. Step 3: Cross multiply
    267,067,891.80x = 400,601,837.70 × 198,193,138.20
  4. Step 4: Simplify right side
    267,067,891.80x = 79,396,535,382,450,064
  5. Step 5: Solve for x
    x = 79,396,535,382,450,064/267,067,891.80
  6. Step 6: Final answer
    x = 297,289,707.30

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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.