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Finding the Fourth Proportional to 331,521.40, 496,115.70 and 303,527.80

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Solution

The fourth proportional to 331,521.40, 496,115.70 and 303,527.80 is: 454,223.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,521.40 : 496,115.70 = 303,527.80 : x
  2. Step 2: Convert to fraction form
    331,521.40/496,115.70 = 303,527.80/x
  3. Step 3: Cross multiply
    331,521.40x = 496,115.70 × 303,527.80
  4. Step 4: Simplify right side
    331,521.40x = 150,584,906,966.46
  5. Step 5: Solve for x
    x = 150,584,906,966.46/331,521.40
  6. Step 6: Final answer
    x = 454,223.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.