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Finding the Third Proportional to 257,219 and 366,911

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Solution

The third proportional to 257,219 and 366,911 is: 523,381.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,219 : 366,911 = 366,911 : x
  2. Step 2: Convert to fraction form
    257,219/366,911 = 366,911/x
  3. Step 3: Cross multiply
    257,219x = 366,911 × 366,911
  4. Step 4: Simplify right side
    257,219x = 134,623,681,921
  5. Step 5: Solve for x
    x = 134,623,681,921/257,219
  6. Step 6: Final answer
    x = 523,381.56

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.