Home / 378,981,279.90-568,471,919.85-120,216,752.10

Finding the Fourth Proportional to 378,981,279.90, 568,471,919.85 and 120,216,752.10

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Solution

The fourth proportional to 378,981,279.90, 568,471,919.85 and 120,216,752.10 is: 180,325,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,981,279.90 : 568,471,919.85 = 120,216,752.10 : x
  2. Step 2: Convert to fraction form
    378,981,279.90/568,471,919.85 = 120,216,752.10/x
  3. Step 3: Cross multiply
    378,981,279.90x = 568,471,919.85 × 120,216,752.10
  4. Step 4: Simplify right side
    378,981,279.90x = 68,339,847,864,418,520
  5. Step 5: Solve for x
    x = 68,339,847,864,418,520/378,981,279.90
  6. Step 6: Final answer
    x = 180,325,128.15

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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.