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Finding the Third Proportional to 191,188.50 and 420,121.50

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Solution

The third proportional to 191,188.50 and 420,121.50 is: 923,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,188.50 : 420,121.50 = 420,121.50 : x
  2. Step 2: Convert to fraction form
    191,188.50/420,121.50 = 420,121.50/x
  3. Step 3: Cross multiply
    191,188.50x = 420,121.50 × 420,121.50
  4. Step 4: Simplify right side
    191,188.50x = 176,502,074,762.25
  5. Step 5: Solve for x
    x = 176,502,074,762.25/191,188.50
  6. Step 6: Final answer
    x = 923,183.53

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.