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Finding the Fourth Proportional to 307,171.38, 423,921.15 and 171,249.33

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Solution

The fourth proportional to 307,171.38, 423,921.15 and 171,249.33 is: 236,337.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,171.38 : 423,921.15 = 171,249.33 : x
  2. Step 2: Convert to fraction form
    307,171.38/423,921.15 = 171,249.33/x
  3. Step 3: Cross multiply
    307,171.38x = 423,921.15 × 171,249.33
  4. Step 4: Simplify right side
    307,171.38x = 72,596,212,910.33
  5. Step 5: Solve for x
    x = 72,596,212,910.33/307,171.38
  6. Step 6: Final answer
    x = 236,337.82

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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.