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Finding the Third Proportional to 120,600.14 and 257,215.50

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Solution

The third proportional to 120,600.14 and 257,215.50 is: 548,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,600.14 : 257,215.50 = 257,215.50 : x
  2. Step 2: Convert to fraction form
    120,600.14/257,215.50 = 257,215.50/x
  3. Step 3: Cross multiply
    120,600.14x = 257,215.50 × 257,215.50
  4. Step 4: Simplify right side
    120,600.14x = 66,159,813,440.25
  5. Step 5: Solve for x
    x = 66,159,813,440.25/120,600.14
  6. Step 6: Final answer
    x = 548,588.19

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.