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Finding the Fourth Proportional to 279,726.30, 419,589.45 and 235,439.55

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Solution

The fourth proportional to 279,726.30, 419,589.45 and 235,439.55 is: 353,159.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,726.30 : 419,589.45 = 235,439.55 : x
  2. Step 2: Convert to fraction form
    279,726.30/419,589.45 = 235,439.55/x
  3. Step 3: Cross multiply
    279,726.30x = 419,589.45 × 235,439.55
  4. Step 4: Simplify right side
    279,726.30x = 98,787,951,292.75
  5. Step 5: Solve for x
    x = 98,787,951,292.75/279,726.30
  6. Step 6: Final answer
    x = 353,159.33

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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.