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Finding the Fourth Proportional to 379,109.58, 568,662.75 and 154,419.90

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Solution

The fourth proportional to 379,109.58, 568,662.75 and 154,419.90 is: 231,629.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,109.58 : 568,662.75 = 154,419.90 : x
  2. Step 2: Convert to fraction form
    379,109.58/568,662.75 = 154,419.90/x
  3. Step 3: Cross multiply
    379,109.58x = 568,662.75 × 154,419.90
  4. Step 4: Simplify right side
    379,109.58x = 87,812,846,489.27
  5. Step 5: Solve for x
    x = 87,812,846,489.27/379,109.58
  6. Step 6: Final answer
    x = 231,629.19

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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.