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Finding the Third Proportional to 251,710 and 330,178

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Solution

The third proportional to 251,710 and 330,178 is: 433,107.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,710 : 330,178 = 330,178 : x
  2. Step 2: Convert to fraction form
    251,710/330,178 = 330,178/x
  3. Step 3: Cross multiply
    251,710x = 330,178 × 330,178
  4. Step 4: Simplify right side
    251,710x = 109,017,511,684
  5. Step 5: Solve for x
    x = 109,017,511,684/251,710
  6. Step 6: Final answer
    x = 433,107.59

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.