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Finding the Fourth Proportional to 236,972, 327,021.28 and 129,542.48

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Solution

The fourth proportional to 236,972, 327,021.28 and 129,542.48 is: 178,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,972 : 327,021.28 = 129,542.48 : x
  2. Step 2: Convert to fraction form
    236,972/327,021.28 = 129,542.48/x
  3. Step 3: Cross multiply
    236,972x = 327,021.28 × 129,542.48
  4. Step 4: Simplify right side
    236,972x = 42,363,147,623.97
  5. Step 5: Solve for x
    x = 42,363,147,623.97/236,972
  6. Step 6: Final answer
    x = 178,768.58

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1.5x scale

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.