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Finding the Third Proportional to 119,430 and 256,554

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Solution

The third proportional to 119,430 and 256,554 is: 551,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,430 : 256,554 = 256,554 : x
  2. Step 2: Convert to fraction form
    119,430/256,554 = 256,554/x
  3. Step 3: Cross multiply
    119,430x = 256,554 × 256,554
  4. Step 4: Simplify right side
    119,430x = 65,819,954,916
  5. Step 5: Solve for x
    x = 65,819,954,916/119,430
  6. Step 6: Final answer
    x = 551,117.43

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.