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Finding the Third Proportional to 155,320.88 and 339,720.75

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Solution

The third proportional to 155,320.88 and 339,720.75 is: 743,043.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,320.88 : 339,720.75 = 339,720.75 : x
  2. Step 2: Convert to fraction form
    155,320.88/339,720.75 = 339,720.75/x
  3. Step 3: Cross multiply
    155,320.88x = 339,720.75 × 339,720.75
  4. Step 4: Simplify right side
    155,320.88x = 115,410,187,980.56
  5. Step 5: Solve for x
    x = 115,410,187,980.56/155,320.88
  6. Step 6: Final answer
    x = 743,043.64

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.