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Finding the Third Proportional to 310,512 and 480,942

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Solution

The third proportional to 310,512 and 480,942 is: 744,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,512 : 480,942 = 480,942 : x
  2. Step 2: Convert to fraction form
    310,512/480,942 = 480,942/x
  3. Step 3: Cross multiply
    310,512x = 480,942 × 480,942
  4. Step 4: Simplify right side
    310,512x = 231,305,207,364
  5. Step 5: Solve for x
    x = 231,305,207,364/310,512
  6. Step 6: Final answer
    x = 744,915.52

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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.