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Finding the Third Proportional to 210,431 and 295,990

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Solution

The third proportional to 210,431 and 295,990 is: 416,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,431 : 295,990 = 295,990 : x
  2. Step 2: Convert to fraction form
    210,431/295,990 = 295,990/x
  3. Step 3: Cross multiply
    210,431x = 295,990 × 295,990
  4. Step 4: Simplify right side
    210,431x = 87,610,080,100
  5. Step 5: Solve for x
    x = 87,610,080,100/210,431
  6. Step 6: Final answer
    x = 416,336.38

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.