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Finding the Fourth Proportional to 303,309.60, 454,964.40 and 145,456.80

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Solution

The fourth proportional to 303,309.60, 454,964.40 and 145,456.80 is: 218,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,309.60 : 454,964.40 = 145,456.80 : x
  2. Step 2: Convert to fraction form
    303,309.60/454,964.40 = 145,456.80/x
  3. Step 3: Cross multiply
    303,309.60x = 454,964.40 × 145,456.80
  4. Step 4: Simplify right side
    303,309.60x = 66,177,665,737.92
  5. Step 5: Solve for x
    x = 66,177,665,737.92/303,309.60
  6. Step 6: Final answer
    x = 218,185.20

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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.