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Finding the Fourth Proportional to 310,843.96, 428,926.34 and 196,079.29

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Solution

The fourth proportional to 310,843.96, 428,926.34 and 196,079.29 is: 270,565.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,843.96 : 428,926.34 = 196,079.29 : x
  2. Step 2: Convert to fraction form
    310,843.96/428,926.34 = 196,079.29/x
  3. Step 3: Cross multiply
    310,843.96x = 428,926.34 × 196,079.29
  4. Step 4: Simplify right side
    310,843.96x = 84,103,571,229.10
  5. Step 5: Solve for x
    x = 84,103,571,229.10/310,843.96
  6. Step 6: Final answer
    x = 270,565.24

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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.