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Finding the Fourth Proportional to 307,344, 424,137.96 and 173,208

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Solution

The fourth proportional to 307,344, 424,137.96 and 173,208 is: 239,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,344 : 424,137.96 = 173,208 : x
  2. Step 2: Convert to fraction form
    307,344/424,137.96 = 173,208/x
  3. Step 3: Cross multiply
    307,344x = 424,137.96 × 173,208
  4. Step 4: Simplify right side
    307,344x = 73,464,087,775.68
  5. Step 5: Solve for x
    x = 73,464,087,775.68/307,344
  6. Step 6: Final answer
    x = 239,028.87

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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.