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Finding the Third Proportional to 237,740 and 518,128

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Solution

The third proportional to 237,740 and 518,128 is: 1,129,202.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,740 : 518,128 = 518,128 : x
  2. Step 2: Convert to fraction form
    237,740/518,128 = 518,128/x
  3. Step 3: Cross multiply
    237,740x = 518,128 × 518,128
  4. Step 4: Simplify right side
    237,740x = 268,456,624,384
  5. Step 5: Solve for x
    x = 268,456,624,384/237,740
  6. Step 6: Final answer
    x = 1,129,202.59

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.