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Finding the Fourth Proportional to 279,930.60, 419,895.90 and 167,956.20

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Solution

The fourth proportional to 279,930.60, 419,895.90 and 167,956.20 is: 251,934.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,930.60 : 419,895.90 = 167,956.20 : x
  2. Step 2: Convert to fraction form
    279,930.60/419,895.90 = 167,956.20/x
  3. Step 3: Cross multiply
    279,930.60x = 419,895.90 × 167,956.20
  4. Step 4: Simplify right side
    279,930.60x = 70,524,119,759.58
  5. Step 5: Solve for x
    x = 70,524,119,759.58/279,930.60
  6. Step 6: Final answer
    x = 251,934.30

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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.