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Finding the Third Proportional to 180,520 and 280,648

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Solution

The third proportional to 180,520 and 280,648 is: 436,313.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,520 : 280,648 = 280,648 : x
  2. Step 2: Convert to fraction form
    180,520/280,648 = 280,648/x
  3. Step 3: Cross multiply
    180,520x = 280,648 × 280,648
  4. Step 4: Simplify right side
    180,520x = 78,763,299,904
  5. Step 5: Solve for x
    x = 78,763,299,904/180,520
  6. Step 6: Final answer
    x = 436,313.43

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.