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Finding the Fourth Proportional to 279,691.15, 386,001.66 and 170,789.48

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Solution

The fourth proportional to 279,691.15, 386,001.66 and 170,789.48 is: 235,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,691.15 : 386,001.66 = 170,789.48 : x
  2. Step 2: Convert to fraction form
    279,691.15/386,001.66 = 170,789.48/x
  3. Step 3: Cross multiply
    279,691.15x = 386,001.66 × 170,789.48
  4. Step 4: Simplify right side
    279,691.15x = 65,925,022,790.54
  5. Step 5: Solve for x
    x = 65,925,022,790.54/279,691.15
  6. Step 6: Final answer
    x = 235,706.50

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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.