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Finding the Third Proportional to 319,148 and 485,636

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Solution

The third proportional to 319,148 and 485,636 is: 738,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,148 : 485,636 = 485,636 : x
  2. Step 2: Convert to fraction form
    319,148/485,636 = 485,636/x
  3. Step 3: Cross multiply
    319,148x = 485,636 × 485,636
  4. Step 4: Simplify right side
    319,148x = 235,842,324,496
  5. Step 5: Solve for x
    x = 235,842,324,496/319,148
  6. Step 6: Final answer
    x = 738,974.78

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.