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Finding the Third Proportional to 140,192.38 and 308,420.75

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Solution

The third proportional to 140,192.38 and 308,420.75 is: 678,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,192.38 : 308,420.75 = 308,420.75 : x
  2. Step 2: Convert to fraction form
    140,192.38/308,420.75 = 308,420.75/x
  3. Step 3: Cross multiply
    140,192.38x = 308,420.75 × 308,420.75
  4. Step 4: Simplify right side
    140,192.38x = 95,123,359,030.56
  5. Step 5: Solve for x
    x = 95,123,359,030.56/140,192.38
  6. Step 6: Final answer
    x = 678,520.21

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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.