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Finding the Third Proportional to 201,712 and 438,909

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Solution

The third proportional to 201,712 and 438,909 is: 955,030.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,712 : 438,909 = 438,909 : x
  2. Step 2: Convert to fraction form
    201,712/438,909 = 438,909/x
  3. Step 3: Cross multiply
    201,712x = 438,909 × 438,909
  4. Step 4: Simplify right side
    201,712x = 192,641,110,281
  5. Step 5: Solve for x
    x = 192,641,110,281/201,712
  6. Step 6: Final answer
    x = 955,030.49

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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.