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Finding the Fourth Proportional to 303,997.20, 419,513.40 and 168,039.60

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Solution

The fourth proportional to 303,997.20, 419,513.40 and 168,039.60 is: 231,893.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,997.20 : 419,513.40 = 168,039.60 : x
  2. Step 2: Convert to fraction form
    303,997.20/419,513.40 = 168,039.60/x
  3. Step 3: Cross multiply
    303,997.20x = 419,513.40 × 168,039.60
  4. Step 4: Simplify right side
    303,997.20x = 70,494,863,930.64
  5. Step 5: Solve for x
    x = 70,494,863,930.64/303,997.20
  6. Step 6: Final answer
    x = 231,893.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.