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Finding the Fourth Proportional to 303,158.54, 418,286.85 and 172,325.92

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Solution

The fourth proportional to 303,158.54, 418,286.85 and 172,325.92 is: 237,768.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,158.54 : 418,286.85 = 172,325.92 : x
  2. Step 2: Convert to fraction form
    303,158.54/418,286.85 = 172,325.92/x
  3. Step 3: Cross multiply
    303,158.54x = 418,286.85 × 172,325.92
  4. Step 4: Simplify right side
    303,158.54x = 72,081,665,388.52
  5. Step 5: Solve for x
    x = 72,081,665,388.52/303,158.54
  6. Step 6: Final answer
    x = 237,768.88

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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.