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Finding the Third Proportional to 211,059 and 316,221.75

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Solution

The third proportional to 211,059 and 316,221.75 is: 473,783.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,059 : 316,221.75 = 316,221.75 : x
  2. Step 2: Convert to fraction form
    211,059/316,221.75 = 316,221.75/x
  3. Step 3: Cross multiply
    211,059x = 316,221.75 × 316,221.75
  4. Step 4: Simplify right side
    211,059x = 99,996,195,173.06
  5. Step 5: Solve for x
    x = 99,996,195,173.06/211,059
  6. Step 6: Final answer
    x = 473,783.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.