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Finding the Third Proportional to 310,405.50 and 487,249.50

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Solution

The third proportional to 310,405.50 and 487,249.50 is: 764,844.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,405.50 : 487,249.50 = 487,249.50 : x
  2. Step 2: Convert to fraction form
    310,405.50/487,249.50 = 487,249.50/x
  3. Step 3: Cross multiply
    310,405.50x = 487,249.50 × 487,249.50
  4. Step 4: Simplify right side
    310,405.50x = 237,412,075,250.25
  5. Step 5: Solve for x
    x = 237,412,075,250.25/310,405.50
  6. Step 6: Final answer
    x = 764,844.94

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.