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Finding the Fourth Proportional to 269,672.80, 404,768.40 and 136,703.20

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Solution

The fourth proportional to 269,672.80, 404,768.40 and 136,703.20 is: 205,186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,672.80 : 404,768.40 = 136,703.20 : x
  2. Step 2: Convert to fraction form
    269,672.80/404,768.40 = 136,703.20/x
  3. Step 3: Cross multiply
    269,672.80x = 404,768.40 × 136,703.20
  4. Step 4: Simplify right side
    269,672.80x = 55,333,135,538.88
  5. Step 5: Solve for x
    x = 55,333,135,538.88/269,672.80
  6. Step 6: Final answer
    x = 205,186.19

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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.