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Finding the Third Proportional to 147,220 and 317,768

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Solution

The third proportional to 147,220 and 317,768 is: 685,888.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,220 : 317,768 = 317,768 : x
  2. Step 2: Convert to fraction form
    147,220/317,768 = 317,768/x
  3. Step 3: Cross multiply
    147,220x = 317,768 × 317,768
  4. Step 4: Simplify right side
    147,220x = 100,976,501,824
  5. Step 5: Solve for x
    x = 100,976,501,824/147,220
  6. Step 6: Final answer
    x = 685,888.48

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.