Home / 318,976,736-440,188,072.80-172,299,021.44

Finding the Fourth Proportional to 318,976,736, 440,188,072.80 and 172,299,021.44

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Solution

The fourth proportional to 318,976,736, 440,188,072.80 and 172,299,021.44 is: 237,772,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,976,736 : 440,188,072.80 = 172,299,021.44 : x
  2. Step 2: Convert to fraction form
    318,976,736/440,188,072.80 = 172,299,021.44/x
  3. Step 3: Cross multiply
    318,976,736x = 440,188,072.80 × 172,299,021.44
  4. Step 4: Simplify right side
    318,976,736x = 75,843,974,192,999,488
  5. Step 5: Solve for x
    x = 75,843,974,192,999,488/318,976,736
  6. Step 6: Final answer
    x = 237,772,745.26

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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.