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Finding the Fourth Proportional to 303,021, 418,181.94 and 168,885

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Solution

The fourth proportional to 303,021, 418,181.94 and 168,885 is: 233,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,021 : 418,181.94 = 168,885 : x
  2. Step 2: Convert to fraction form
    303,021/418,181.94 = 168,885/x
  3. Step 3: Cross multiply
    303,021x = 418,181.94 × 168,885
  4. Step 4: Simplify right side
    303,021x = 70,624,656,936.90
  5. Step 5: Solve for x
    x = 70,624,656,936.90/303,021
  6. Step 6: Final answer
    x = 233,068.52

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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.