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Finding the Third Proportional to 131,660 and 288,321

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Solution

The third proportional to 131,660 and 288,321 is: 631,391.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,660 : 288,321 = 288,321 : x
  2. Step 2: Convert to fraction form
    131,660/288,321 = 288,321/x
  3. Step 3: Cross multiply
    131,660x = 288,321 × 288,321
  4. Step 4: Simplify right side
    131,660x = 83,128,999,041
  5. Step 5: Solve for x
    x = 83,128,999,041/131,660
  6. Step 6: Final answer
    x = 631,391.46

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.