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Finding the Fourth Proportional to 235,786.43, 325,385.24 and 128,357.24

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Solution

The fourth proportional to 235,786.43, 325,385.24 and 128,357.24 is: 177,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,786.43 : 325,385.24 = 128,357.24 : x
  2. Step 2: Convert to fraction form
    235,786.43/325,385.24 = 128,357.24/x
  3. Step 3: Cross multiply
    235,786.43x = 325,385.24 × 128,357.24
  4. Step 4: Simplify right side
    235,786.43x = 41,765,549,074.43
  5. Step 5: Solve for x
    x = 41,765,549,074.43/235,786.43
  6. Step 6: Final answer
    x = 177,132.97

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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.