Home / 378,719,872.80-568,079,809.20-217,476,736.80

Finding the Fourth Proportional to 378,719,872.80, 568,079,809.20 and 217,476,736.80

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Solution

The fourth proportional to 378,719,872.80, 568,079,809.20 and 217,476,736.80 is: 326,215,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,719,872.80 : 568,079,809.20 = 217,476,736.80 : x
  2. Step 2: Convert to fraction form
    378,719,872.80/568,079,809.20 = 217,476,736.80/x
  3. Step 3: Cross multiply
    378,719,872.80x = 568,079,809.20 × 217,476,736.80
  4. Step 4: Simplify right side
    378,719,872.80x = 123,544,143,146,782,640
  5. Step 5: Solve for x
    x = 123,544,143,146,782,640/378,719,872.80
  6. Step 6: Final answer
    x = 326,215,105.20

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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.