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Finding the Fourth Proportional to 305,380.53, 421,425.63 and 169,414.49

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Solution

The fourth proportional to 305,380.53, 421,425.63 and 169,414.49 is: 233,792.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,380.53 : 421,425.63 = 169,414.49 : x
  2. Step 2: Convert to fraction form
    305,380.53/421,425.63 = 169,414.49/x
  3. Step 3: Cross multiply
    305,380.53x = 421,425.63 × 169,414.49
  4. Step 4: Simplify right side
    305,380.53x = 71,395,606,072.25
  5. Step 5: Solve for x
    x = 71,395,606,072.25/305,380.53
  6. Step 6: Final answer
    x = 233,792.27

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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.