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Finding the Fourth Proportional to 240,647.15, 332,100.87 and 138,664.78

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Solution

The fourth proportional to 240,647.15, 332,100.87 and 138,664.78 is: 191,361.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,647.15 : 332,100.87 = 138,664.78 : x
  2. Step 2: Convert to fraction form
    240,647.15/332,100.87 = 138,664.78/x
  3. Step 3: Cross multiply
    240,647.15x = 332,100.87 × 138,664.78
  4. Step 4: Simplify right side
    240,647.15x = 46,050,694,076.36
  5. Step 5: Solve for x
    x = 46,050,694,076.36/240,647.15
  6. Step 6: Final answer
    x = 191,361.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.