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Finding the Third Proportional to 201,600 and 313,560

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Solution

The third proportional to 201,600 and 313,560 is: 487,697.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,600 : 313,560 = 313,560 : x
  2. Step 2: Convert to fraction form
    201,600/313,560 = 313,560/x
  3. Step 3: Cross multiply
    201,600x = 313,560 × 313,560
  4. Step 4: Simplify right side
    201,600x = 98,319,873,600
  5. Step 5: Solve for x
    x = 98,319,873,600/201,600
  6. Step 6: Final answer
    x = 487,697.79

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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.