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Finding the Third Proportional to 86,910 and 190,429

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Solution

The third proportional to 86,910 and 190,429 is: 417,250.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,910 : 190,429 = 190,429 : x
  2. Step 2: Convert to fraction form
    86,910/190,429 = 190,429/x
  3. Step 3: Cross multiply
    86,910x = 190,429 × 190,429
  4. Step 4: Simplify right side
    86,910x = 36,263,204,041
  5. Step 5: Solve for x
    x = 36,263,204,041/86,910
  6. Step 6: Final answer
    x = 417,250.08

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.