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Finding the Third Proportional to 251,704 and 380,780

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Solution

The third proportional to 251,704 and 380,780 is: 576,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,704 : 380,780 = 380,780 : x
  2. Step 2: Convert to fraction form
    251,704/380,780 = 380,780/x
  3. Step 3: Cross multiply
    251,704x = 380,780 × 380,780
  4. Step 4: Simplify right side
    251,704x = 144,993,408,400
  5. Step 5: Solve for x
    x = 144,993,408,400/251,704
  6. Step 6: Final answer
    x = 576,047.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.