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Finding the Third Proportional to 331,359.50 and 518,362.50

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Solution

The third proportional to 331,359.50 and 518,362.50 is: 810,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,359.50 : 518,362.50 = 518,362.50 : x
  2. Step 2: Convert to fraction form
    331,359.50/518,362.50 = 518,362.50/x
  3. Step 3: Cross multiply
    331,359.50x = 518,362.50 × 518,362.50
  4. Step 4: Simplify right side
    331,359.50x = 268,699,681,406.25
  5. Step 5: Solve for x
    x = 268,699,681,406.25/331,359.50
  6. Step 6: Final answer
    x = 810,900.79

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.