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Finding the Fourth Proportional to 323,939.86, 485,909.82 and 166,067.62

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Solution

The fourth proportional to 323,939.86, 485,909.82 and 166,067.62 is: 249,101.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,939.86 : 485,909.82 = 166,067.62 : x
  2. Step 2: Convert to fraction form
    323,939.86/485,909.82 = 166,067.62/x
  3. Step 3: Cross multiply
    323,939.86x = 485,909.82 × 166,067.62
  4. Step 4: Simplify right side
    323,939.86x = 80,693,886,127.25
  5. Step 5: Solve for x
    x = 80,693,886,127.25/323,939.86
  6. Step 6: Final answer
    x = 249,101.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.