Home / 239,286.81-330,230.48-131,856.78

Finding the Fourth Proportional to 239,286.81, 330,230.48 and 131,856.78

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Solution

The fourth proportional to 239,286.81, 330,230.48 and 131,856.78 is: 181,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,286.81 : 330,230.48 = 131,856.78 : x
  2. Step 2: Convert to fraction form
    239,286.81/330,230.48 = 131,856.78/x
  3. Step 3: Cross multiply
    239,286.81x = 330,230.48 × 131,856.78
  4. Step 4: Simplify right side
    239,286.81x = 43,543,127,750.65
  5. Step 5: Solve for x
    x = 43,543,127,750.65/239,286.81
  6. Step 6: Final answer
    x = 181,970.45

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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.