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Finding the Fourth Proportional to 259,853.20, 389,664.60 and 119,654.80

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Solution

The fourth proportional to 259,853.20, 389,664.60 and 119,654.80 is: 179,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,853.20 : 389,664.60 = 119,654.80 : x
  2. Step 2: Convert to fraction form
    259,853.20/389,664.60 = 119,654.80/x
  3. Step 3: Cross multiply
    259,853.20x = 389,664.60 × 119,654.80
  4. Step 4: Simplify right side
    259,853.20x = 46,625,239,780.08
  5. Step 5: Solve for x
    x = 46,625,239,780.08/259,853.20
  6. Step 6: Final answer
    x = 179,429.15

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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.