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Finding the Fourth Proportional to 239,170.78, 330,043.50 and 131,738.50

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Solution

The fourth proportional to 239,170.78, 330,043.50 and 131,738.50 is: 181,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,170.78 : 330,043.50 = 131,738.50 : x
  2. Step 2: Convert to fraction form
    239,170.78/330,043.50 = 131,738.50/x
  3. Step 3: Cross multiply
    239,170.78x = 330,043.50 × 131,738.50
  4. Step 4: Simplify right side
    239,170.78x = 43,479,435,624.75
  5. Step 5: Solve for x
    x = 43,479,435,624.75/239,170.78
  6. Step 6: Final answer
    x = 181,792.42

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1.5x scale

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.