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Finding the Third Proportional to 197,064 and 408,140

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Solution

The third proportional to 197,064 and 408,140 is: 845,300.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,064 : 408,140 = 408,140 : x
  2. Step 2: Convert to fraction form
    197,064/408,140 = 408,140/x
  3. Step 3: Cross multiply
    197,064x = 408,140 × 408,140
  4. Step 4: Simplify right side
    197,064x = 166,578,259,600
  5. Step 5: Solve for x
    x = 166,578,259,600/197,064
  6. Step 6: Final answer
    x = 845,300.31

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.