Home / 259,431.76-389,297.70-109,662.36

Finding the Fourth Proportional to 259,431.76, 389,297.70 and 109,662.36

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Solution

The fourth proportional to 259,431.76, 389,297.70 and 109,662.36 is: 164,556.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,431.76 : 389,297.70 = 109,662.36 : x
  2. Step 2: Convert to fraction form
    259,431.76/389,297.70 = 109,662.36/x
  3. Step 3: Cross multiply
    259,431.76x = 389,297.70 × 109,662.36
  4. Step 4: Simplify right side
    259,431.76x = 42,691,304,524.57
  5. Step 5: Solve for x
    x = 42,691,304,524.57/259,431.76
  6. Step 6: Final answer
    x = 164,556.97

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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.