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Finding the Third Proportional to 153,885 and 231,840

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Solution

The third proportional to 153,885 and 231,840 is: 349,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,885 : 231,840 = 231,840 : x
  2. Step 2: Convert to fraction form
    153,885/231,840 = 231,840/x
  3. Step 3: Cross multiply
    153,885x = 231,840 × 231,840
  4. Step 4: Simplify right side
    153,885x = 53,749,785,600
  5. Step 5: Solve for x
    x = 53,749,785,600/153,885
  6. Step 6: Final answer
    x = 349,285.41

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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.