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Finding the Fourth Proportional to 300,997.81, 415,361.10 and 171,910.91

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Solution

The fourth proportional to 300,997.81, 415,361.10 and 171,910.91 is: 237,227.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,997.81 : 415,361.10 = 171,910.91 : x
  2. Step 2: Convert to fraction form
    300,997.81/415,361.10 = 171,910.91/x
  3. Step 3: Cross multiply
    300,997.81x = 415,361.10 × 171,910.91
  4. Step 4: Simplify right side
    300,997.81x = 71,405,103,059.26
  5. Step 5: Solve for x
    x = 71,405,103,059.26/300,997.81
  6. Step 6: Final answer
    x = 237,227.99

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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.