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Finding the Fourth Proportional to 279,876.44, 386,229.60 and 159,017.89

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Solution

The fourth proportional to 279,876.44, 386,229.60 and 159,017.89 is: 219,444.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,876.44 : 386,229.60 = 159,017.89 : x
  2. Step 2: Convert to fraction form
    279,876.44/386,229.60 = 159,017.89/x
  3. Step 3: Cross multiply
    279,876.44x = 386,229.60 × 159,017.89
  4. Step 4: Simplify right side
    279,876.44x = 61,417,414,968.44
  5. Step 5: Solve for x
    x = 61,417,414,968.44/279,876.44
  6. Step 6: Final answer
    x = 219,444.75

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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.