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Finding the Fourth Proportional to 300,872.49, 415,392.83 and 193,628.90

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Solution

The fourth proportional to 300,872.49, 415,392.83 and 193,628.90 is: 267,329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,872.49 : 415,392.83 = 193,628.90 : x
  2. Step 2: Convert to fraction form
    300,872.49/415,392.83 = 193,628.90/x
  3. Step 3: Cross multiply
    300,872.49x = 415,392.83 × 193,628.90
  4. Step 4: Simplify right side
    300,872.49x = 80,432,053,695.68
  5. Step 5: Solve for x
    x = 80,432,053,695.68/300,872.49
  6. Step 6: Final answer
    x = 267,329.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.