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Finding the Fourth Proportional to 279,891.72, 386,236.62 and 159,017.04

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Solution

The fourth proportional to 279,891.72, 386,236.62 and 159,017.04 is: 219,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,891.72 : 386,236.62 = 159,017.04 : x
  2. Step 2: Convert to fraction form
    279,891.72/386,236.62 = 159,017.04/x
  3. Step 3: Cross multiply
    279,891.72x = 386,236.62 × 159,017.04
  4. Step 4: Simplify right side
    279,891.72x = 61,418,204,052.00
  5. Step 5: Solve for x
    x = 61,418,204,052.00/279,891.72
  6. Step 6: Final answer
    x = 219,435.59

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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.