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Finding the Third Proportional to 219,120 and 338,355

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Solution

The third proportional to 219,120 and 338,355 is: 522,472.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,120 : 338,355 = 338,355 : x
  2. Step 2: Convert to fraction form
    219,120/338,355 = 338,355/x
  3. Step 3: Cross multiply
    219,120x = 338,355 × 338,355
  4. Step 4: Simplify right side
    219,120x = 114,484,106,025
  5. Step 5: Solve for x
    x = 114,484,106,025/219,120
  6. Step 6: Final answer
    x = 522,472.19

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.