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Finding the Fourth Proportional to 279,977.22, 386,354.61 and 159,102.54

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Solution

The fourth proportional to 279,977.22, 386,354.61 and 159,102.54 is: 219,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,977.22 : 386,354.61 = 159,102.54 : x
  2. Step 2: Convert to fraction form
    279,977.22/386,354.61 = 159,102.54/x
  3. Step 3: Cross multiply
    279,977.22x = 386,354.61 × 159,102.54
  4. Step 4: Simplify right side
    279,977.22x = 61,469,999,791.71
  5. Step 5: Solve for x
    x = 61,469,999,791.71/279,977.22
  6. Step 6: Final answer
    x = 219,553.58

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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.