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Finding the Third Proportional to 201,417 and 438,783

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Solution

The third proportional to 201,417 and 438,783 is: 955,880.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,417 : 438,783 = 438,783 : x
  2. Step 2: Convert to fraction form
    201,417/438,783 = 438,783/x
  3. Step 3: Cross multiply
    201,417x = 438,783 × 438,783
  4. Step 4: Simplify right side
    201,417x = 192,530,521,089
  5. Step 5: Solve for x
    x = 192,530,521,089/201,417
  6. Step 6: Final answer
    x = 955,880.19

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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.