Home / 300,786,794.64-415,221,785.55-189,441,273.78

Finding the Fourth Proportional to 300,786,794.64, 415,221,785.55 and 189,441,273.78

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Solution

The fourth proportional to 300,786,794.64, 415,221,785.55 and 189,441,273.78 is: 261,514,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,786,794.64 : 415,221,785.55 = 189,441,273.78 : x
  2. Step 2: Convert to fraction form
    300,786,794.64/415,221,785.55 = 189,441,273.78/x
  3. Step 3: Cross multiply
    300,786,794.64x = 415,221,785.55 × 189,441,273.78
  4. Step 4: Simplify right side
    300,786,794.64x = 78,660,143,955,798,000
  5. Step 5: Solve for x
    x = 78,660,143,955,798,000/300,786,794.64
  6. Step 6: Final answer
    x = 261,514,618.85

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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.