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Finding the Third Proportional to 217,670.50 and 336,356.50

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Solution

The third proportional to 217,670.50 and 336,356.50 is: 519,756.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,670.50 : 336,356.50 = 336,356.50 : x
  2. Step 2: Convert to fraction form
    217,670.50/336,356.50 = 336,356.50/x
  3. Step 3: Cross multiply
    217,670.50x = 336,356.50 × 336,356.50
  4. Step 4: Simplify right side
    217,670.50x = 113,135,695,092.25
  5. Step 5: Solve for x
    x = 113,135,695,092.25/217,670.50
  6. Step 6: Final answer
    x = 519,756.67

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.