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Finding the Fourth Proportional to 269,859.75, 372,060.32 and 221,282.79

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Solution

The fourth proportional to 269,859.75, 372,060.32 and 221,282.79 is: 305,086.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,859.75 : 372,060.32 = 221,282.79 : x
  2. Step 2: Convert to fraction form
    269,859.75/372,060.32 = 221,282.79/x
  3. Step 3: Cross multiply
    269,859.75x = 372,060.32 × 221,282.79
  4. Step 4: Simplify right side
    269,859.75x = 82,330,544,551.48
  5. Step 5: Solve for x
    x = 82,330,544,551.48/269,859.75
  6. Step 6: Final answer
    x = 305,086.42

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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.