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Finding the Third Proportional to 136,440 and 278,426

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Solution

The third proportional to 136,440 and 278,426 is: 568,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,440 : 278,426 = 278,426 : x
  2. Step 2: Convert to fraction form
    136,440/278,426 = 278,426/x
  3. Step 3: Cross multiply
    136,440x = 278,426 × 278,426
  4. Step 4: Simplify right side
    136,440x = 77,521,037,476
  5. Step 5: Solve for x
    x = 77,521,037,476/136,440
  6. Step 6: Final answer
    x = 568,169.43

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.