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Finding the Fourth Proportional to 303,391.06, 418,502.90 and 194,456.59

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Solution

The fourth proportional to 303,391.06, 418,502.90 and 194,456.59 is: 268,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,391.06 : 418,502.90 = 194,456.59 : x
  2. Step 2: Convert to fraction form
    303,391.06/418,502.90 = 194,456.59/x
  3. Step 3: Cross multiply
    303,391.06x = 418,502.90 × 194,456.59
  4. Step 4: Simplify right side
    303,391.06x = 81,380,646,839.11
  5. Step 5: Solve for x
    x = 81,380,646,839.11/303,391.06
  6. Step 6: Final answer
    x = 268,236.80

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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.