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Finding the Fourth Proportional to 321,908.58, 444,261.78 and 178,696.26

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Solution

The fourth proportional to 321,908.58, 444,261.78 and 178,696.26 is: 246,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,908.58 : 444,261.78 = 178,696.26 : x
  2. Step 2: Convert to fraction form
    321,908.58/444,261.78 = 178,696.26/x
  3. Step 3: Cross multiply
    321,908.58x = 444,261.78 × 178,696.26
  4. Step 4: Simplify right side
    321,908.58x = 79,387,918,546.94
  5. Step 5: Solve for x
    x = 79,387,918,546.94/321,908.58
  6. Step 6: Final answer
    x = 246,616.35

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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.