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Finding the Fourth Proportional to 236,906.28, 326,930.70 and 129,476.28

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Solution

The fourth proportional to 236,906.28, 326,930.70 and 129,476.28 is: 178,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,906.28 : 326,930.70 = 129,476.28 : x
  2. Step 2: Convert to fraction form
    236,906.28/326,930.70 = 129,476.28/x
  3. Step 3: Cross multiply
    236,906.28x = 326,930.70 × 129,476.28
  4. Step 4: Simplify right side
    236,906.28x = 42,329,770,853.80
  5. Step 5: Solve for x
    x = 42,329,770,853.80/236,906.28
  6. Step 6: Final answer
    x = 178,677.28

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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.