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Finding the Third Proportional to 56,200 and 120,418

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Solution

The third proportional to 56,200 and 120,418 is: 258,015.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,200 : 120,418 = 120,418 : x
  2. Step 2: Convert to fraction form
    56,200/120,418 = 120,418/x
  3. Step 3: Cross multiply
    56,200x = 120,418 × 120,418
  4. Step 4: Simplify right side
    56,200x = 14,500,494,724
  5. Step 5: Solve for x
    x = 14,500,494,724/56,200
  6. Step 6: Final answer
    x = 258,015.92

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.