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Finding the Fourth Proportional to 269,689.82, 404,783.19 and 136,664.33

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Solution

The fourth proportional to 269,689.82, 404,783.19 and 136,664.33 is: 205,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,689.82 : 404,783.19 = 136,664.33 : x
  2. Step 2: Convert to fraction form
    269,689.82/404,783.19 = 136,664.33/x
  3. Step 3: Cross multiply
    269,689.82x = 404,783.19 × 136,664.33
  4. Step 4: Simplify right side
    269,689.82x = 55,319,421,432.70
  5. Step 5: Solve for x
    x = 55,319,421,432.70/269,689.82
  6. Step 6: Final answer
    x = 205,122.40

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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.