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Finding the Third Proportional to 223,456 and 312,571

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Solution

The third proportional to 223,456 and 312,571 is: 437,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,456 : 312,571 = 312,571 : x
  2. Step 2: Convert to fraction form
    223,456/312,571 = 312,571/x
  3. Step 3: Cross multiply
    223,456x = 312,571 × 312,571
  4. Step 4: Simplify right side
    223,456x = 97,700,630,041
  5. Step 5: Solve for x
    x = 97,700,630,041/223,456
  6. Step 6: Final answer
    x = 437,225.36

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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.