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Finding the Third Proportional to 310,380 and 495,908

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Solution

The third proportional to 310,380 and 495,908 is: 792,334.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,380 : 495,908 = 495,908 : x
  2. Step 2: Convert to fraction form
    310,380/495,908 = 495,908/x
  3. Step 3: Cross multiply
    310,380x = 495,908 × 495,908
  4. Step 4: Simplify right side
    310,380x = 245,924,744,464
  5. Step 5: Solve for x
    x = 245,924,744,464/310,380
  6. Step 6: Final answer
    x = 792,334.38

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.