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Finding the Fourth Proportional to 206,155.43, 308,968.88 and 179,390.19

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Solution

The fourth proportional to 206,155.43, 308,968.88 and 179,390.19 is: 268,855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,155.43 : 308,968.88 = 179,390.19 : x
  2. Step 2: Convert to fraction form
    206,155.43/308,968.88 = 179,390.19/x
  3. Step 3: Cross multiply
    206,155.43x = 308,968.88 × 179,390.19
  4. Step 4: Simplify right side
    206,155.43x = 55,425,987,358.04
  5. Step 5: Solve for x
    x = 55,425,987,358.04/206,155.43
  6. Step 6: Final answer
    x = 268,855.34

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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.