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Finding the Third Proportional to 275,289.75 and 387,666.75

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Solution

The third proportional to 275,289.75 and 387,666.75 is: 545,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,289.75 : 387,666.75 = 387,666.75 : x
  2. Step 2: Convert to fraction form
    275,289.75/387,666.75 = 387,666.75/x
  3. Step 3: Cross multiply
    275,289.75x = 387,666.75 × 387,666.75
  4. Step 4: Simplify right side
    275,289.75x = 150,285,509,055.56
  5. Step 5: Solve for x
    x = 150,285,509,055.56/275,289.75
  6. Step 6: Final answer
    x = 545,917.56

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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.