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Finding the Fourth Proportional to 204,660, 307,007.28 and 56,916

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Solution

The fourth proportional to 204,660, 307,007.28 and 56,916 is: 85,378.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,660 : 307,007.28 = 56,916 : x
  2. Step 2: Convert to fraction form
    204,660/307,007.28 = 56,916/x
  3. Step 3: Cross multiply
    204,660x = 307,007.28 × 56,916
  4. Step 4: Simplify right side
    204,660x = 17,473,626,348.48
  5. Step 5: Solve for x
    x = 17,473,626,348.48/204,660
  6. Step 6: Final answer
    x = 85,378.81

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