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Finding the Fourth Proportional to 269,871.48, 405,054.18 and 136,843.56

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Solution

The fourth proportional to 269,871.48, 405,054.18 and 136,843.56 is: 205,390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,871.48 : 405,054.18 = 136,843.56 : x
  2. Step 2: Convert to fraction form
    269,871.48/405,054.18 = 136,843.56/x
  3. Step 3: Cross multiply
    269,871.48x = 405,054.18 × 136,843.56
  4. Step 4: Simplify right side
    269,871.48x = 55,429,055,984.08
  5. Step 5: Solve for x
    x = 55,429,055,984.08/269,871.48
  6. Step 6: Final answer
    x = 205,390.57

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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.