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Finding the Third Proportional to 149,886.75 and 321,140.75

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Solution

The third proportional to 149,886.75 and 321,140.75 is: 688,062.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,886.75 : 321,140.75 = 321,140.75 : x
  2. Step 2: Convert to fraction form
    149,886.75/321,140.75 = 321,140.75/x
  3. Step 3: Cross multiply
    149,886.75x = 321,140.75 × 321,140.75
  4. Step 4: Simplify right side
    149,886.75x = 103,131,381,310.56
  5. Step 5: Solve for x
    x = 103,131,381,310.56/149,886.75
  6. Step 6: Final answer
    x = 688,062.03

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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.