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Finding the Fourth Proportional to 303,317.70, 454,976.55 and 208,839.30

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Solution

The fourth proportional to 303,317.70, 454,976.55 and 208,839.30 is: 313,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,317.70 : 454,976.55 = 208,839.30 : x
  2. Step 2: Convert to fraction form
    303,317.70/454,976.55 = 208,839.30/x
  3. Step 3: Cross multiply
    303,317.70x = 454,976.55 × 208,839.30
  4. Step 4: Simplify right side
    303,317.70x = 95,016,984,218.42
  5. Step 5: Solve for x
    x = 95,016,984,218.42/303,317.70
  6. Step 6: Final answer
    x = 313,258.95

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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.