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Finding the Fourth Proportional to 269,694, 404,789.46 and 136,668.51

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Solution

The fourth proportional to 269,694, 404,789.46 and 136,668.51 is: 205,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,694 : 404,789.46 = 136,668.51 : x
  2. Step 2: Convert to fraction form
    269,694/404,789.46 = 136,668.51/x
  3. Step 3: Cross multiply
    269,694x = 404,789.46 × 136,668.51
  4. Step 4: Simplify right side
    269,694x = 55,321,972,361.90
  5. Step 5: Solve for x
    x = 55,321,972,361.90/269,694
  6. Step 6: Final answer
    x = 205,128.67

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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.