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Finding the Third Proportional to 289,993.50 and 408,380.25

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Solution

The third proportional to 289,993.50 and 408,380.25 is: 575,097.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,993.50 : 408,380.25 = 408,380.25 : x
  2. Step 2: Convert to fraction form
    289,993.50/408,380.25 = 408,380.25/x
  3. Step 3: Cross multiply
    289,993.50x = 408,380.25 × 408,380.25
  4. Step 4: Simplify right side
    289,993.50x = 166,774,428,590.06
  5. Step 5: Solve for x
    x = 166,774,428,590.06/289,993.50
  6. Step 6: Final answer
    x = 575,097.13

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.