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Finding the Third Proportional to 293,136 and 642,384

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Solution

The third proportional to 293,136 and 642,384 is: 1,407,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,136 : 642,384 = 642,384 : x
  2. Step 2: Convert to fraction form
    293,136/642,384 = 642,384/x
  3. Step 3: Cross multiply
    293,136x = 642,384 × 642,384
  4. Step 4: Simplify right side
    293,136x = 412,657,203,456
  5. Step 5: Solve for x
    x = 412,657,203,456/293,136
  6. Step 6: Final answer
    x = 1,407,732.94

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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.