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Finding the Fourth Proportional to 329,438.73, 454,286.02 and 281,849.61

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Solution

The fourth proportional to 329,438.73, 454,286.02 and 281,849.61 is: 388,662.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,438.73 : 454,286.02 = 281,849.61 : x
  2. Step 2: Convert to fraction form
    329,438.73/454,286.02 = 281,849.61/x
  3. Step 3: Cross multiply
    329,438.73x = 454,286.02 × 281,849.61
  4. Step 4: Simplify right side
    329,438.73x = 128,040,337,565.45
  5. Step 5: Solve for x
    x = 128,040,337,565.45/329,438.73
  6. Step 6: Final answer
    x = 388,662.07

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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.