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Finding the Fourth Proportional to 305,540.91, 421,650.99 and 169,583.61

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Solution

The fourth proportional to 305,540.91, 421,650.99 and 169,583.61 is: 234,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,540.91 : 421,650.99 = 169,583.61 : x
  2. Step 2: Convert to fraction form
    305,540.91/421,650.99 = 169,583.61/x
  3. Step 3: Cross multiply
    305,540.91x = 421,650.99 × 169,583.61
  4. Step 4: Simplify right side
    305,540.91x = 71,505,097,044.27
  5. Step 5: Solve for x
    x = 71,505,097,044.27/305,540.91
  6. Step 6: Final answer
    x = 234,027.90

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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.