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Finding the Fourth Proportional to 401,879, 554,593.02 and 223,031

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Solution

The fourth proportional to 401,879, 554,593.02 and 223,031 is: 307,782.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,879 : 554,593.02 = 223,031 : x
  2. Step 2: Convert to fraction form
    401,879/554,593.02 = 223,031/x
  3. Step 3: Cross multiply
    401,879x = 554,593.02 × 223,031
  4. Step 4: Simplify right side
    401,879x = 123,691,435,843.62
  5. Step 5: Solve for x
    x = 123,691,435,843.62/401,879
  6. Step 6: Final answer
    x = 307,782.78

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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.