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Finding the Third Proportional to 199,543.50 and 408,409.50

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Solution

The third proportional to 199,543.50 and 408,409.50 is: 835,899.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,543.50 : 408,409.50 = 408,409.50 : x
  2. Step 2: Convert to fraction form
    199,543.50/408,409.50 = 408,409.50/x
  3. Step 3: Cross multiply
    199,543.50x = 408,409.50 × 408,409.50
  4. Step 4: Simplify right side
    199,543.50x = 166,798,319,690.25
  5. Step 5: Solve for x
    x = 166,798,319,690.25/199,543.50
  6. Step 6: Final answer
    x = 835,899.54

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.