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Finding the Fourth Proportional to 354,729.27, 489,398.15 and 273,082.49

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Solution

The fourth proportional to 354,729.27, 489,398.15 and 273,082.49 is: 376,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,729.27 : 489,398.15 = 273,082.49 : x
  2. Step 2: Convert to fraction form
    354,729.27/489,398.15 = 273,082.49/x
  3. Step 3: Cross multiply
    354,729.27x = 489,398.15 × 273,082.49
  4. Step 4: Simplify right side
    354,729.27x = 133,646,065,474.35
  5. Step 5: Solve for x
    x = 133,646,065,474.35/354,729.27
  6. Step 6: Final answer
    x = 376,755.11

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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.