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Finding the Fourth Proportional to 279,877.26, 419,608.53 and 169,043.34

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Solution

The fourth proportional to 279,877.26, 419,608.53 and 169,043.34 is: 253,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,877.26 : 419,608.53 = 169,043.34 : x
  2. Step 2: Convert to fraction form
    279,877.26/419,608.53 = 169,043.34/x
  3. Step 3: Cross multiply
    279,877.26x = 419,608.53 × 169,043.34
  4. Step 4: Simplify right side
    279,877.26x = 70,932,027,403.69
  5. Step 5: Solve for x
    x = 70,932,027,403.69/279,877.26
  6. Step 6: Final answer
    x = 253,439.77

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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.