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Finding the Fourth Proportional to 307,190.54, 423,921.97 and 171,222.95

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Solution

The fourth proportional to 307,190.54, 423,921.97 and 171,222.95 is: 236,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,190.54 : 423,921.97 = 171,222.95 : x
  2. Step 2: Convert to fraction form
    307,190.54/423,921.97 = 171,222.95/x
  3. Step 3: Cross multiply
    307,190.54x = 423,921.97 × 171,222.95
  4. Step 4: Simplify right side
    307,190.54x = 72,585,170,273.21
  5. Step 5: Solve for x
    x = 72,585,170,273.21/307,190.54
  6. Step 6: Final answer
    x = 236,287.13

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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.