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Finding the Third Proportional to 223,132 and 312,810

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Solution

The third proportional to 223,132 and 312,810 is: 438,530.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,132 : 312,810 = 312,810 : x
  2. Step 2: Convert to fraction form
    223,132/312,810 = 312,810/x
  3. Step 3: Cross multiply
    223,132x = 312,810 × 312,810
  4. Step 4: Simplify right side
    223,132x = 97,850,096,100
  5. Step 5: Solve for x
    x = 97,850,096,100/223,132
  6. Step 6: Final answer
    x = 438,530.09

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.