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Finding the Fourth Proportional to 217,097.78, 325,775.10 and 121,115.84

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Solution

The fourth proportional to 217,097.78, 325,775.10 and 121,115.84 is: 181,745.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,097.78 : 325,775.10 = 121,115.84 : x
  2. Step 2: Convert to fraction form
    217,097.78/325,775.10 = 121,115.84/x
  3. Step 3: Cross multiply
    217,097.78x = 325,775.10 × 121,115.84
  4. Step 4: Simplify right side
    217,097.78x = 39,456,524,887.58
  5. Step 5: Solve for x
    x = 39,456,524,887.58/217,097.78
  6. Step 6: Final answer
    x = 181,745.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.