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Finding the Fourth Proportional to 305,612.03, 421,723.50 and 169,635.27

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Solution

The fourth proportional to 305,612.03, 421,723.50 and 169,635.27 is: 234,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,612.03 : 421,723.50 = 169,635.27 : x
  2. Step 2: Convert to fraction form
    305,612.03/421,723.50 = 169,635.27/x
  3. Step 3: Cross multiply
    305,612.03x = 421,723.50 × 169,635.27
  4. Step 4: Simplify right side
    305,612.03x = 71,539,179,787.85
  5. Step 5: Solve for x
    x = 71,539,179,787.85/305,612.03
  6. Step 6: Final answer
    x = 234,084.96

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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.