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Finding the Fourth Proportional to 236,695.38, 326,645.38 and 129,264.54

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Solution

The fourth proportional to 236,695.38, 326,645.38 and 129,264.54 is: 178,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,695.38 : 326,645.38 = 129,264.54 : x
  2. Step 2: Convert to fraction form
    236,695.38/326,645.38 = 129,264.54/x
  3. Step 3: Cross multiply
    236,695.38x = 326,645.38 × 129,264.54
  4. Step 4: Simplify right side
    236,695.38x = 42,223,664,788.83
  5. Step 5: Solve for x
    x = 42,223,664,788.83/236,695.38
  6. Step 6: Final answer
    x = 178,388.21

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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.