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Finding the Fourth Proportional to 269,778.90, 404,996.40 and 136,590.60

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Solution

The fourth proportional to 269,778.90, 404,996.40 and 136,590.60 is: 205,051.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,778.90 : 404,996.40 = 136,590.60 : x
  2. Step 2: Convert to fraction form
    269,778.90/404,996.40 = 136,590.60/x
  3. Step 3: Cross multiply
    269,778.90x = 404,996.40 × 136,590.60
  4. Step 4: Simplify right side
    269,778.90x = 55,318,701,273.84
  5. Step 5: Solve for x
    x = 55,318,701,273.84/269,778.90
  6. Step 6: Final answer
    x = 205,051.99

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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.