Home / 320,828,791.48-480,414,380.82-221,425,162.36

Finding the Fourth Proportional to 320,828,791.48, 480,414,380.82 and 221,425,162.36

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Solution

The fourth proportional to 320,828,791.48, 480,414,380.82 and 221,425,162.36 is: 331,565,729.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,828,791.48 : 480,414,380.82 = 221,425,162.36 : x
  2. Step 2: Convert to fraction form
    320,828,791.48/480,414,380.82 = 221,425,162.36/x
  3. Step 3: Cross multiply
    320,828,791.48x = 480,414,380.82 × 221,425,162.36
  4. Step 4: Simplify right side
    320,828,791.48x = 106,375,832,273,147,376
  5. Step 5: Solve for x
    x = 106,375,832,273,147,376/320,828,791.48
  6. Step 6: Final answer
    x = 331,565,729.44

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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.