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Finding the Fourth Proportional to 307,617.82, 424,512.09 and 171,643.52

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Solution

The fourth proportional to 307,617.82, 424,512.09 and 171,643.52 is: 236,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,617.82 : 424,512.09 = 171,643.52 : x
  2. Step 2: Convert to fraction form
    307,617.82/424,512.09 = 171,643.52/x
  3. Step 3: Cross multiply
    307,617.82x = 424,512.09 × 171,643.52
  4. Step 4: Simplify right side
    307,617.82x = 72,864,750,471.44
  5. Step 5: Solve for x
    x = 72,864,750,471.44/307,617.82
  6. Step 6: Final answer
    x = 236,867.78

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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.