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Finding the Third Proportional to 197,688 and 305,988

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Solution

The third proportional to 197,688 and 305,988 is: 473,618.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,688 : 305,988 = 305,988 : x
  2. Step 2: Convert to fraction form
    197,688/305,988 = 305,988/x
  3. Step 3: Cross multiply
    197,688x = 305,988 × 305,988
  4. Step 4: Simplify right side
    197,688x = 93,628,656,144
  5. Step 5: Solve for x
    x = 93,628,656,144/197,688
  6. Step 6: Final answer
    x = 473,618.31

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.