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Finding the Third Proportional to 200,880 and 310,824

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Solution

The third proportional to 200,880 and 310,824 is: 480,941.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,880 : 310,824 = 310,824 : x
  2. Step 2: Convert to fraction form
    200,880/310,824 = 310,824/x
  3. Step 3: Cross multiply
    200,880x = 310,824 × 310,824
  4. Step 4: Simplify right side
    200,880x = 96,611,558,976
  5. Step 5: Solve for x
    x = 96,611,558,976/200,880
  6. Step 6: Final answer
    x = 480,941.65

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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.