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Finding the Third Proportional to 212,908 and 296,030

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Solution

The third proportional to 212,908 and 296,030 is: 411,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,908 : 296,030 = 296,030 : x
  2. Step 2: Convert to fraction form
    212,908/296,030 = 296,030/x
  3. Step 3: Cross multiply
    212,908x = 296,030 × 296,030
  4. Step 4: Simplify right side
    212,908x = 87,633,760,900
  5. Step 5: Solve for x
    x = 87,633,760,900/212,908
  6. Step 6: Final answer
    x = 411,603.89

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.