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Finding the Fourth Proportional to 379,286.67, 569,013.15 and 142,629.27

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Solution

The fourth proportional to 379,286.67, 569,013.15 and 142,629.27 is: 213,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,286.67 : 569,013.15 = 142,629.27 : x
  2. Step 2: Convert to fraction form
    379,286.67/569,013.15 = 142,629.27/x
  3. Step 3: Cross multiply
    379,286.67x = 569,013.15 × 142,629.27
  4. Step 4: Simplify right side
    379,286.67x = 81,157,930,204.90
  5. Step 5: Solve for x
    x = 81,157,930,204.90/379,286.67
  6. Step 6: Final answer
    x = 213,975.17

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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.