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Finding the Third Proportional to 193,189.50 and 420,702.75

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Solution

The third proportional to 193,189.50 and 420,702.75 is: 916,151.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,189.50 : 420,702.75 = 420,702.75 : x
  2. Step 2: Convert to fraction form
    193,189.50/420,702.75 = 420,702.75/x
  3. Step 3: Cross multiply
    193,189.50x = 420,702.75 × 420,702.75
  4. Step 4: Simplify right side
    193,189.50x = 176,990,803,857.56
  5. Step 5: Solve for x
    x = 176,990,803,857.56/193,189.50
  6. Step 6: Final answer
    x = 916,151.26

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.