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Finding the Fourth Proportional to 300,007.80, 449,493.30 and 253,351.80

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Solution

The fourth proportional to 300,007.80, 449,493.30 and 253,351.80 is: 379,589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,007.80 : 449,493.30 = 253,351.80 : x
  2. Step 2: Convert to fraction form
    300,007.80/449,493.30 = 253,351.80/x
  3. Step 3: Cross multiply
    300,007.80x = 449,493.30 × 253,351.80
  4. Step 4: Simplify right side
    300,007.80x = 113,879,936,642.94
  5. Step 5: Solve for x
    x = 113,879,936,642.94/300,007.80
  6. Step 6: Final answer
    x = 379,589.92

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1.5x scale

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.