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Finding the Fourth Proportional to 305,709.44, 421,858.46 and 169,736.36

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Solution

The fourth proportional to 305,709.44, 421,858.46 and 169,736.36 is: 234,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,709.44 : 421,858.46 = 169,736.36 : x
  2. Step 2: Convert to fraction form
    305,709.44/421,858.46 = 169,736.36/x
  3. Step 3: Cross multiply
    305,709.44x = 421,858.46 × 169,736.36
  4. Step 4: Simplify right side
    305,709.44x = 71,604,717,750.65
  5. Step 5: Solve for x
    x = 71,604,717,750.65/305,709.44
  6. Step 6: Final answer
    x = 234,224.76

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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.