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Finding the Fourth Proportional to 403,721.80, 605,874.30 and 226,040.20

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Solution

The fourth proportional to 403,721.80, 605,874.30 and 226,040.20 is: 339,223.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,721.80 : 605,874.30 = 226,040.20 : x
  2. Step 2: Convert to fraction form
    403,721.80/605,874.30 = 226,040.20/x
  3. Step 3: Cross multiply
    403,721.80x = 605,874.30 × 226,040.20
  4. Step 4: Simplify right side
    403,721.80x = 136,951,947,946.86
  5. Step 5: Solve for x
    x = 136,951,947,946.86/403,721.80
  6. Step 6: Final answer
    x = 339,223.56

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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.