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Finding the Fourth Proportional to 300,029.80, 449,439.90 and 187,364.20

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Solution

The fourth proportional to 300,029.80, 449,439.90 and 187,364.20 is: 280,668.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,029.80 : 449,439.90 = 187,364.20 : x
  2. Step 2: Convert to fraction form
    300,029.80/449,439.90 = 187,364.20/x
  3. Step 3: Cross multiply
    300,029.80x = 449,439.90 × 187,364.20
  4. Step 4: Simplify right side
    300,029.80x = 84,208,947,311.58
  5. Step 5: Solve for x
    x = 84,208,947,311.58/300,029.80
  6. Step 6: Final answer
    x = 280,668.61

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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.