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Finding the Third Proportional to 308,248 and 666,128

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Solution

The third proportional to 308,248 and 666,128 is: 1,439,511.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,248 : 666,128 = 666,128 : x
  2. Step 2: Convert to fraction form
    308,248/666,128 = 666,128/x
  3. Step 3: Cross multiply
    308,248x = 666,128 × 666,128
  4. Step 4: Simplify right side
    308,248x = 443,726,512,384
  5. Step 5: Solve for x
    x = 443,726,512,384/308,248
  6. Step 6: Final answer
    x = 1,439,511.41

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.