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Finding the Fourth Proportional to 206,891.04, 310,428.72 and 108,372

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Solution

The fourth proportional to 206,891.04, 310,428.72 and 108,372 is: 162,606.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,891.04 : 310,428.72 = 108,372 : x
  2. Step 2: Convert to fraction form
    206,891.04/310,428.72 = 108,372/x
  3. Step 3: Cross multiply
    206,891.04x = 310,428.72 × 108,372
  4. Step 4: Simplify right side
    206,891.04x = 33,641,781,243.84
  5. Step 5: Solve for x
    x = 33,641,781,243.84/206,891.04
  6. Step 6: Final answer
    x = 162,606.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.