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Finding the Third Proportional to 249,383 and 386,940

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Solution

The third proportional to 249,383 and 386,940 is: 600,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,383 : 386,940 = 386,940 : x
  2. Step 2: Convert to fraction form
    249,383/386,940 = 386,940/x
  3. Step 3: Cross multiply
    249,383x = 386,940 × 386,940
  4. Step 4: Simplify right side
    249,383x = 149,722,563,600
  5. Step 5: Solve for x
    x = 149,722,563,600/249,383
  6. Step 6: Final answer
    x = 600,371.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.