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Finding the Third Proportional to 231,386 and 349,991

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Solution

The third proportional to 231,386 and 349,991 is: 529,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,386 : 349,991 = 349,991 : x
  2. Step 2: Convert to fraction form
    231,386/349,991 = 349,991/x
  3. Step 3: Cross multiply
    231,386x = 349,991 × 349,991
  4. Step 4: Simplify right side
    231,386x = 122,493,700,081
  5. Step 5: Solve for x
    x = 122,493,700,081/231,386
  6. Step 6: Final answer
    x = 529,391.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.