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Finding the Fourth Proportional to 239,839.26, 330,978.60 and 132,409.47

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Solution

The fourth proportional to 239,839.26, 330,978.60 and 132,409.47 is: 182,725.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,839.26 : 330,978.60 = 132,409.47 : x
  2. Step 2: Convert to fraction form
    239,839.26/330,978.60 = 132,409.47/x
  3. Step 3: Cross multiply
    239,839.26x = 330,978.60 × 132,409.47
  4. Step 4: Simplify right side
    239,839.26x = 43,824,701,007.34
  5. Step 5: Solve for x
    x = 43,824,701,007.34/239,839.26
  6. Step 6: Final answer
    x = 182,725.30

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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.