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Finding the Fourth Proportional to 269,872.48, 405,055.68 and 136,844.56

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Solution

The fourth proportional to 269,872.48, 405,055.68 and 136,844.56 is: 205,392.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,872.48 : 405,055.68 = 136,844.56 : x
  2. Step 2: Convert to fraction form
    269,872.48/405,055.68 = 136,844.56/x
  3. Step 3: Cross multiply
    269,872.48x = 405,055.68 × 136,844.56
  4. Step 4: Simplify right side
    269,872.48x = 55,429,666,305.10
  5. Step 5: Solve for x
    x = 55,429,666,305.10/269,872.48
  6. Step 6: Final answer
    x = 205,392.07

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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.