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Finding the Fourth Proportional to 305,585.20, 421,696.44 and 169,625.20

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Solution

The fourth proportional to 305,585.20, 421,696.44 and 169,625.20 is: 234,076.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,585.20 : 421,696.44 = 169,625.20 : x
  2. Step 2: Convert to fraction form
    305,585.20/421,696.44 = 169,625.20/x
  3. Step 3: Cross multiply
    305,585.20x = 421,696.44 × 169,625.20
  4. Step 4: Simplify right side
    305,585.20x = 71,530,342,974.29
  5. Step 5: Solve for x
    x = 71,530,342,974.29/305,585.20
  6. Step 6: Final answer
    x = 234,076.59

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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.