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Finding the Fourth Proportional to 279,667.08, 419,363.31 and 119,720.43

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Solution

The fourth proportional to 279,667.08, 419,363.31 and 119,720.43 is: 179,521.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,667.08 : 419,363.31 = 119,720.43 : x
  2. Step 2: Convert to fraction form
    279,667.08/419,363.31 = 119,720.43/x
  3. Step 3: Cross multiply
    279,667.08x = 419,363.31 × 119,720.43
  4. Step 4: Simplify right side
    279,667.08x = 50,206,355,799.42
  5. Step 5: Solve for x
    x = 50,206,355,799.42/279,667.08
  6. Step 6: Final answer
    x = 179,521.87

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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.