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Finding the Fourth Proportional to 279,380.40, 419,182.84 and 127,649.40

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Solution

The fourth proportional to 279,380.40, 419,182.84 and 127,649.40 is: 191,525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,380.40 : 419,182.84 = 127,649.40 : x
  2. Step 2: Convert to fraction form
    279,380.40/419,182.84 = 127,649.40/x
  3. Step 3: Cross multiply
    279,380.40x = 419,182.84 × 127,649.40
  4. Step 4: Simplify right side
    279,380.40x = 53,508,438,016.30
  5. Step 5: Solve for x
    x = 53,508,438,016.30/279,380.40
  6. Step 6: Final answer
    x = 191,525.38

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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.