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Finding the Third Proportional to 99,816 and 216,246

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Solution

The third proportional to 99,816 and 216,246 is: 468,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,816 : 216,246 = 216,246 : x
  2. Step 2: Convert to fraction form
    99,816/216,246 = 216,246/x
  3. Step 3: Cross multiply
    99,816x = 216,246 × 216,246
  4. Step 4: Simplify right side
    99,816x = 46,762,332,516
  5. Step 5: Solve for x
    x = 46,762,332,516/99,816
  6. Step 6: Final answer
    x = 468,485.34

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.