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Finding the Third Proportional to 210,777 and 308,277

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Solution

The third proportional to 210,777 and 308,277 is: 450,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,777 : 308,277 = 308,277 : x
  2. Step 2: Convert to fraction form
    210,777/308,277 = 308,277/x
  3. Step 3: Cross multiply
    210,777x = 308,277 × 308,277
  4. Step 4: Simplify right side
    210,777x = 95,034,708,729
  5. Step 5: Solve for x
    x = 95,034,708,729/210,777
  6. Step 6: Final answer
    x = 450,877.98

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.