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Finding the Fourth Proportional to 279,845.86, 386,197.61 and 159,007.62

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Solution

The fourth proportional to 279,845.86, 386,197.61 and 159,007.62 is: 219,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,845.86 : 386,197.61 = 159,007.62 : x
  2. Step 2: Convert to fraction form
    279,845.86/386,197.61 = 159,007.62/x
  3. Step 3: Cross multiply
    279,845.86x = 386,197.61 × 159,007.62
  4. Step 4: Simplify right side
    279,845.86x = 61,408,361,552.08
  5. Step 5: Solve for x
    x = 61,408,361,552.08/279,845.86
  6. Step 6: Final answer
    x = 219,436.37

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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.