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Finding the Fourth Proportional to 264,910.80, 397,436.60 and 115,086.80

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Solution

The fourth proportional to 264,910.80, 397,436.60 and 115,086.80 is: 172,660.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,910.80 : 397,436.60 = 115,086.80 : x
  2. Step 2: Convert to fraction form
    264,910.80/397,436.60 = 115,086.80/x
  3. Step 3: Cross multiply
    264,910.80x = 397,436.60 × 115,086.80
  4. Step 4: Simplify right side
    264,910.80x = 45,739,706,496.88
  5. Step 5: Solve for x
    x = 45,739,706,496.88/264,910.80
  6. Step 6: Final answer
    x = 172,660.78

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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.