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Finding the Fourth Proportional to 307,726.25, 424,670.99 and 171,757.39

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Solution

The fourth proportional to 307,726.25, 424,670.99 and 171,757.39 is: 237,030.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,726.25 : 424,670.99 = 171,757.39 : x
  2. Step 2: Convert to fraction form
    307,726.25/424,670.99 = 171,757.39/x
  3. Step 3: Cross multiply
    307,726.25x = 424,670.99 × 171,757.39
  4. Step 4: Simplify right side
    307,726.25x = 72,940,380,851.12
  5. Step 5: Solve for x
    x = 72,940,380,851.12/307,726.25
  6. Step 6: Final answer
    x = 237,030.09

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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.