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Finding the Fourth Proportional to 305,744.19, 421,912.85 and 169,786.83

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Solution

The fourth proportional to 305,744.19, 421,912.85 and 169,786.83 is: 234,297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,744.19 : 421,912.85 = 169,786.83 : x
  2. Step 2: Convert to fraction form
    305,744.19/421,912.85 = 169,786.83/x
  3. Step 3: Cross multiply
    305,744.19x = 421,912.85 × 169,786.83
  4. Step 4: Simplify right side
    305,744.19x = 71,635,247,026.06
  5. Step 5: Solve for x
    x = 71,635,247,026.06/305,744.19
  6. Step 6: Final answer
    x = 234,297.98

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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.