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Finding the Fourth Proportional to 307,660.92, 424,593.38 and 171,721.38

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Solution

The fourth proportional to 307,660.92, 424,593.38 and 171,721.38 is: 236,987.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,660.92 : 424,593.38 = 171,721.38 : x
  2. Step 2: Convert to fraction form
    307,660.92/424,593.38 = 171,721.38/x
  3. Step 3: Cross multiply
    307,660.92x = 424,593.38 × 171,721.38
  4. Step 4: Simplify right side
    307,660.92x = 72,911,762,208.06
  5. Step 5: Solve for x
    x = 72,911,762,208.06/307,660.92
  6. Step 6: Final answer
    x = 236,987.41

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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.