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Finding the Third Proportional to 217,428 and 332,626.50

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Solution

The third proportional to 217,428 and 332,626.50 is: 508,859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,428 : 332,626.50 = 332,626.50 : x
  2. Step 2: Convert to fraction form
    217,428/332,626.50 = 332,626.50/x
  3. Step 3: Cross multiply
    217,428x = 332,626.50 × 332,626.50
  4. Step 4: Simplify right side
    217,428x = 110,640,388,502.25
  5. Step 5: Solve for x
    x = 110,640,388,502.25/217,428
  6. Step 6: Final answer
    x = 508,859.89

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.