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Finding the Third Proportional to 203,243 and 442,678

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Solution

The third proportional to 203,243 and 442,678 is: 964,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,243 : 442,678 = 442,678 : x
  2. Step 2: Convert to fraction form
    203,243/442,678 = 442,678/x
  3. Step 3: Cross multiply
    203,243x = 442,678 × 442,678
  4. Step 4: Simplify right side
    203,243x = 195,963,811,684
  5. Step 5: Solve for x
    x = 195,963,811,684/203,243
  6. Step 6: Final answer
    x = 964,184.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.