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Finding the Fourth Proportional to 300,061.80, 449,487.90 and 187,396.20

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Solution

The fourth proportional to 300,061.80, 449,487.90 and 187,396.20 is: 280,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,061.80 : 449,487.90 = 187,396.20 : x
  2. Step 2: Convert to fraction form
    300,061.80/449,487.90 = 187,396.20/x
  3. Step 3: Cross multiply
    300,061.80x = 449,487.90 × 187,396.20
  4. Step 4: Simplify right side
    300,061.80x = 84,232,324,405.98
  5. Step 5: Solve for x
    x = 84,232,324,405.98/300,061.80
  6. Step 6: Final answer
    x = 280,716.59

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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.