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Finding the Fourth Proportional to 305,376.62, 421,420.23 and 169,410.57

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Solution

The fourth proportional to 305,376.62, 421,420.23 and 169,410.57 is: 233,786.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,376.62 : 421,420.23 = 169,410.57 : x
  2. Step 2: Convert to fraction form
    305,376.62/421,420.23 = 169,410.57/x
  3. Step 3: Cross multiply
    305,376.62x = 421,420.23 × 169,410.57
  4. Step 4: Simplify right side
    305,376.62x = 71,393,039,266.73
  5. Step 5: Solve for x
    x = 71,393,039,266.73/305,376.62
  6. Step 6: Final answer
    x = 233,786.86

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