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Finding the Third Proportional to 275,239.88 and 387,587.81

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Solution

The third proportional to 275,239.88 and 387,587.81 is: 545,794.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,239.88 : 387,587.81 = 387,587.81 : x
  2. Step 2: Convert to fraction form
    275,239.88/387,587.81 = 387,587.81/x
  3. Step 3: Cross multiply
    275,239.88x = 387,587.81 × 387,587.81
  4. Step 4: Simplify right side
    275,239.88x = 150,224,312,398.54
  5. Step 5: Solve for x
    x = 150,224,312,398.54/275,239.88
  6. Step 6: Final answer
    x = 545,794.15

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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.