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Finding the Fourth Proportional to 279,902.30, 386,265.83 and 159,083.70

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Solution

The fourth proportional to 279,902.30, 386,265.83 and 159,083.70 is: 219,535.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,902.30 : 386,265.83 = 159,083.70 : x
  2. Step 2: Convert to fraction form
    279,902.30/386,265.83 = 159,083.70/x
  3. Step 3: Cross multiply
    279,902.30x = 386,265.83 × 159,083.70
  4. Step 4: Simplify right side
    279,902.30x = 61,448,596,624.55
  5. Step 5: Solve for x
    x = 61,448,596,624.55/279,902.30
  6. Step 6: Final answer
    x = 219,535.88

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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.