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Finding the Third Proportional to 188,247 and 402,690

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Solution

The third proportional to 188,247 and 402,690 is: 861,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,247 : 402,690 = 402,690 : x
  2. Step 2: Convert to fraction form
    188,247/402,690 = 402,690/x
  3. Step 3: Cross multiply
    188,247x = 402,690 × 402,690
  4. Step 4: Simplify right side
    188,247x = 162,159,236,100
  5. Step 5: Solve for x
    x = 162,159,236,100/188,247
  6. Step 6: Final answer
    x = 861,417.37

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.