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Finding the Third Proportional to 258,223 and 559,340

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Solution

The third proportional to 258,223 and 559,340 is: 1,211,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,223 : 559,340 = 559,340 : x
  2. Step 2: Convert to fraction form
    258,223/559,340 = 559,340/x
  3. Step 3: Cross multiply
    258,223x = 559,340 × 559,340
  4. Step 4: Simplify right side
    258,223x = 312,861,235,600
  5. Step 5: Solve for x
    x = 312,861,235,600/258,223
  6. Step 6: Final answer
    x = 1,211,593.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.