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Finding the Third Proportional to 135,317 and 293,688

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Solution

The third proportional to 135,317 and 293,688 is: 637,411.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,317 : 293,688 = 293,688 : x
  2. Step 2: Convert to fraction form
    135,317/293,688 = 293,688/x
  3. Step 3: Cross multiply
    135,317x = 293,688 × 293,688
  4. Step 4: Simplify right side
    135,317x = 86,252,641,344
  5. Step 5: Solve for x
    x = 86,252,641,344/135,317
  6. Step 6: Final answer
    x = 637,411.72

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.