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Finding the Third Proportional to 99,112 and 217,904

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Solution

The third proportional to 99,112 and 217,904 is: 479,075.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,112 : 217,904 = 217,904 : x
  2. Step 2: Convert to fraction form
    99,112/217,904 = 217,904/x
  3. Step 3: Cross multiply
    99,112x = 217,904 × 217,904
  4. Step 4: Simplify right side
    99,112x = 47,482,153,216
  5. Step 5: Solve for x
    x = 47,482,153,216/99,112
  6. Step 6: Final answer
    x = 479,075.72

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.