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Finding the Third Proportional to 148,539.75 and 309,318.75

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Solution

The third proportional to 148,539.75 and 309,318.75 is: 644,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,539.75 : 309,318.75 = 309,318.75 : x
  2. Step 2: Convert to fraction form
    148,539.75/309,318.75 = 309,318.75/x
  3. Step 3: Cross multiply
    148,539.75x = 309,318.75 × 309,318.75
  4. Step 4: Simplify right side
    148,539.75x = 95,678,089,101.56
  5. Step 5: Solve for x
    x = 95,678,089,101.56/148,539.75
  6. Step 6: Final answer
    x = 644,124.48

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.