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Finding the Fourth Proportional to 238,990.54, 329,768.94 and 136,996.48

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Solution

The fourth proportional to 238,990.54, 329,768.94 and 136,996.48 is: 189,033.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,990.54 : 329,768.94 = 136,996.48 : x
  2. Step 2: Convert to fraction form
    238,990.54/329,768.94 = 136,996.48/x
  3. Step 3: Cross multiply
    238,990.54x = 329,768.94 × 136,996.48
  4. Step 4: Simplify right side
    238,990.54x = 45,177,183,993.33
  5. Step 5: Solve for x
    x = 45,177,183,993.33/238,990.54
  6. Step 6: Final answer
    x = 189,033.36

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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.