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Finding the Third Proportional to 116,790 and 255,390

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Solution

The third proportional to 116,790 and 255,390 is: 558,472.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,790 : 255,390 = 255,390 : x
  2. Step 2: Convert to fraction form
    116,790/255,390 = 255,390/x
  3. Step 3: Cross multiply
    116,790x = 255,390 × 255,390
  4. Step 4: Simplify right side
    116,790x = 65,224,052,100
  5. Step 5: Solve for x
    x = 65,224,052,100/116,790
  6. Step 6: Final answer
    x = 558,472.92

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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.