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Finding the Fourth Proportional to 261,911.39, 361,092.99 and 171,109.58

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Solution

The fourth proportional to 261,911.39, 361,092.99 and 171,109.58 is: 235,906.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,911.39 : 361,092.99 = 171,109.58 : x
  2. Step 2: Convert to fraction form
    261,911.39/361,092.99 = 171,109.58/x
  3. Step 3: Cross multiply
    261,911.39x = 361,092.99 × 171,109.58
  4. Step 4: Simplify right side
    261,911.39x = 61,786,468,101.56
  5. Step 5: Solve for x
    x = 61,786,468,101.56/261,911.39
  6. Step 6: Final answer
    x = 235,906.00

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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.