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Finding the Third Proportional to 223,126 and 312,800

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Solution

The third proportional to 223,126 and 312,800 is: 438,513.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,126 : 312,800 = 312,800 : x
  2. Step 2: Convert to fraction form
    223,126/312,800 = 312,800/x
  3. Step 3: Cross multiply
    223,126x = 312,800 × 312,800
  4. Step 4: Simplify right side
    223,126x = 97,843,840,000
  5. Step 5: Solve for x
    x = 97,843,840,000/223,126
  6. Step 6: Final answer
    x = 438,513.84

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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.