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Finding the Fourth Proportional to 269,743.95, 404,486.64 and 127,470.78

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Solution

The fourth proportional to 269,743.95, 404,486.64 and 127,470.78 is: 191,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,743.95 : 404,486.64 = 127,470.78 : x
  2. Step 2: Convert to fraction form
    269,743.95/404,486.64 = 127,470.78/x
  3. Step 3: Cross multiply
    269,743.95x = 404,486.64 × 127,470.78
  4. Step 4: Simplify right side
    269,743.95x = 51,560,227,500.38
  5. Step 5: Solve for x
    x = 51,560,227,500.38/269,743.95
  6. Step 6: Final answer
    x = 191,145.07

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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.