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Finding the Fourth Proportional to 300,149.40, 449,462.07 and 180,130.80

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Solution

The fourth proportional to 300,149.40, 449,462.07 and 180,130.80 is: 269,738.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,149.40 : 449,462.07 = 180,130.80 : x
  2. Step 2: Convert to fraction form
    300,149.40/449,462.07 = 180,130.80/x
  3. Step 3: Cross multiply
    300,149.40x = 449,462.07 × 180,130.80
  4. Step 4: Simplify right side
    300,149.40x = 80,961,962,238.76
  5. Step 5: Solve for x
    x = 80,961,962,238.76/300,149.40
  6. Step 6: Final answer
    x = 269,738.88

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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.