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Finding the Fourth Proportional to 259,818.80, 389,851.26 and 179,979.68

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Solution

The fourth proportional to 259,818.80, 389,851.26 and 179,979.68 is: 270,054.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,818.80 : 389,851.26 = 179,979.68 : x
  2. Step 2: Convert to fraction form
    259,818.80/389,851.26 = 179,979.68/x
  3. Step 3: Cross multiply
    259,818.80x = 389,851.26 × 179,979.68
  4. Step 4: Simplify right side
    259,818.80x = 70,165,305,022.40
  5. Step 5: Solve for x
    x = 70,165,305,022.40/259,818.80
  6. Step 6: Final answer
    x = 270,054.77

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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.