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Finding the Fourth Proportional to 300,990.80, 451,490.04 and 207,471.44

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Solution

The fourth proportional to 300,990.80, 451,490.04 and 207,471.44 is: 311,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,990.80 : 451,490.04 = 207,471.44 : x
  2. Step 2: Convert to fraction form
    300,990.80/451,490.04 = 207,471.44/x
  3. Step 3: Cross multiply
    300,990.80x = 451,490.04 × 207,471.44
  4. Step 4: Simplify right side
    300,990.80x = 93,671,288,744.46
  5. Step 5: Solve for x
    x = 93,671,288,744.46/300,990.80
  6. Step 6: Final answer
    x = 311,209.81

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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.