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Finding the Third Proportional to 201,628 and 313,603

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Solution

The third proportional to 201,628 and 313,603 is: 487,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,628 : 313,603 = 313,603 : x
  2. Step 2: Convert to fraction form
    201,628/313,603 = 313,603/x
  3. Step 3: Cross multiply
    201,628x = 313,603 × 313,603
  4. Step 4: Simplify right side
    201,628x = 98,346,841,609
  5. Step 5: Solve for x
    x = 98,346,841,609/201,628
  6. Step 6: Final answer
    x = 487,763.81

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.