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Finding the Fourth Proportional to 269,398.70, 371,786.79 and 148,539.61

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Solution

The fourth proportional to 269,398.70, 371,786.79 and 148,539.61 is: 204,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,398.70 : 371,786.79 = 148,539.61 : x
  2. Step 2: Convert to fraction form
    269,398.70/371,786.79 = 148,539.61/x
  3. Step 3: Cross multiply
    269,398.70x = 371,786.79 × 148,539.61
  4. Step 4: Simplify right side
    269,398.70x = 55,225,064,789.75
  5. Step 5: Solve for x
    x = 55,225,064,789.75/269,398.70
  6. Step 6: Final answer
    x = 204,993.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.