Home / 239,289.81-330,234.63-131,859.78

Finding the Fourth Proportional to 239,289.81, 330,234.63 and 131,859.78

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Solution

The fourth proportional to 239,289.81, 330,234.63 and 131,859.78 is: 181,974.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,289.81 : 330,234.63 = 131,859.78 : x
  2. Step 2: Convert to fraction form
    239,289.81/330,234.63 = 131,859.78/x
  3. Step 3: Cross multiply
    239,289.81x = 330,234.63 × 131,859.78
  4. Step 4: Simplify right side
    239,289.81x = 43,544,665,660.18
  5. Step 5: Solve for x
    x = 43,544,665,660.18/239,289.81
  6. Step 6: Final answer
    x = 181,974.59

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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.