Home / 259,481.38-389,274.59-109,721.43

Finding the Fourth Proportional to 259,481.38, 389,274.59 and 109,721.43

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Solution

The fourth proportional to 259,481.38, 389,274.59 and 109,721.43 is: 164,604.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,481.38 : 389,274.59 = 109,721.43 : x
  2. Step 2: Convert to fraction form
    259,481.38/389,274.59 = 109,721.43/x
  3. Step 3: Cross multiply
    259,481.38x = 389,274.59 × 109,721.43
  4. Step 4: Simplify right side
    259,481.38x = 42,711,764,677.46
  5. Step 5: Solve for x
    x = 42,711,764,677.46/259,481.38
  6. Step 6: Final answer
    x = 164,604.35

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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.