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Finding the Third Proportional to 137,748 and 212,698

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Solution

The third proportional to 137,748 and 212,698 is: 328,429.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,748 : 212,698 = 212,698 : x
  2. Step 2: Convert to fraction form
    137,748/212,698 = 212,698/x
  3. Step 3: Cross multiply
    137,748x = 212,698 × 212,698
  4. Step 4: Simplify right side
    137,748x = 45,240,439,204
  5. Step 5: Solve for x
    x = 45,240,439,204/137,748
  6. Step 6: Final answer
    x = 328,429.01

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.