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Finding the Fourth Proportional to 235,635.52, 325,183.98 and 128,212.51

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Solution

The fourth proportional to 235,635.52, 325,183.98 and 128,212.51 is: 176,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,635.52 : 325,183.98 = 128,212.51 : x
  2. Step 2: Convert to fraction form
    235,635.52/325,183.98 = 128,212.51/x
  3. Step 3: Cross multiply
    235,635.52x = 325,183.98 × 128,212.51
  4. Step 4: Simplify right side
    235,635.52x = 41,692,654,287.59
  5. Step 5: Solve for x
    x = 41,692,654,287.59/235,635.52
  6. Step 6: Final answer
    x = 176,937.05

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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.