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Finding the Fourth Proportional to 236,805.62, 326,794.65 and 129,376.94

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Solution

The fourth proportional to 236,805.62, 326,794.65 and 129,376.94 is: 178,541.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,805.62 : 326,794.65 = 129,376.94 : x
  2. Step 2: Convert to fraction form
    236,805.62/326,794.65 = 129,376.94/x
  3. Step 3: Cross multiply
    236,805.62x = 326,794.65 × 129,376.94
  4. Step 4: Simplify right side
    236,805.62x = 42,279,691,825.37
  5. Step 5: Solve for x
    x = 42,279,691,825.37/236,805.62
  6. Step 6: Final answer
    x = 178,541.76

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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.