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Finding the Fourth Proportional to 403,781.90, 557,243.84 and 222,493.78

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Solution

The fourth proportional to 403,781.90, 557,243.84 and 222,493.78 is: 307,055.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,781.90 : 557,243.84 = 222,493.78 : x
  2. Step 2: Convert to fraction form
    403,781.90/557,243.84 = 222,493.78/x
  3. Step 3: Cross multiply
    403,781.90x = 557,243.84 × 222,493.78
  4. Step 4: Simplify right side
    403,781.90x = 123,983,288,891.41
  5. Step 5: Solve for x
    x = 123,983,288,891.41/403,781.90
  6. Step 6: Final answer
    x = 307,055.09

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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.