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Finding the Third Proportional to 99,308.53 and 217,059.75

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Solution

The third proportional to 99,308.53 and 217,059.75 is: 474,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,308.53 : 217,059.75 = 217,059.75 : x
  2. Step 2: Convert to fraction form
    99,308.53/217,059.75 = 217,059.75/x
  3. Step 3: Cross multiply
    99,308.53x = 217,059.75 × 217,059.75
  4. Step 4: Simplify right side
    99,308.53x = 47,114,935,070.06
  5. Step 5: Solve for x
    x = 47,114,935,070.06/99,308.53
  6. Step 6: Final answer
    x = 474,429.89

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.