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Finding the Fourth Proportional to 238,969, 329,738.62 and 136,975.68

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Solution

The fourth proportional to 238,969, 329,738.62 and 136,975.68 is: 189,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,969 : 329,738.62 = 136,975.68 : x
  2. Step 2: Convert to fraction form
    238,969/329,738.62 = 136,975.68/x
  3. Step 3: Cross multiply
    238,969x = 329,738.62 × 136,975.68
  4. Step 4: Simplify right side
    238,969x = 45,166,171,696.76
  5. Step 5: Solve for x
    x = 45,166,171,696.76/238,969
  6. Step 6: Final answer
    x = 189,004.31

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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.