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Finding the Third Proportional to 203,520 and 447,423

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Solution

The third proportional to 203,520 and 447,423 is: 983,624.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,520 : 447,423 = 447,423 : x
  2. Step 2: Convert to fraction form
    203,520/447,423 = 447,423/x
  3. Step 3: Cross multiply
    203,520x = 447,423 × 447,423
  4. Step 4: Simplify right side
    203,520x = 200,187,340,929
  5. Step 5: Solve for x
    x = 200,187,340,929/203,520
  6. Step 6: Final answer
    x = 983,624.91

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.