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Finding the Fourth Proportional to 303,972.88, 419,504.28 and 168,003.91

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Solution

The fourth proportional to 303,972.88, 419,504.28 and 168,003.91 is: 231,857.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,972.88 : 419,504.28 = 168,003.91 : x
  2. Step 2: Convert to fraction form
    303,972.88/419,504.28 = 168,003.91/x
  3. Step 3: Cross multiply
    303,972.88x = 419,504.28 × 168,003.91
  4. Step 4: Simplify right side
    303,972.88x = 70,478,357,204.21
  5. Step 5: Solve for x
    x = 70,478,357,204.21/303,972.88
  6. Step 6: Final answer
    x = 231,857.39

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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.