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Finding the Third Proportional to 217,059.75 and 335,431.13

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Solution

The third proportional to 217,059.75 and 335,431.13 is: 518,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,059.75 : 335,431.13 = 335,431.13 : x
  2. Step 2: Convert to fraction form
    217,059.75/335,431.13 = 335,431.13/x
  3. Step 3: Cross multiply
    217,059.75x = 335,431.13 × 335,431.13
  4. Step 4: Simplify right side
    217,059.75x = 112,514,039,618.77
  5. Step 5: Solve for x
    x = 112,514,039,618.77/217,059.75
  6. Step 6: Final answer
    x = 518,355.15

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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.