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Finding the Fourth Proportional to 239,176, 330,062.88 and 131,745.70

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Solution

The fourth proportional to 239,176, 330,062.88 and 131,745.70 is: 181,809.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,176 : 330,062.88 = 131,745.70 : x
  2. Step 2: Convert to fraction form
    239,176/330,062.88 = 131,745.70/x
  3. Step 3: Cross multiply
    239,176x = 330,062.88 × 131,745.70
  4. Step 4: Simplify right side
    239,176x = 43,484,365,169.62
  5. Step 5: Solve for x
    x = 43,484,365,169.62/239,176
  6. Step 6: Final answer
    x = 181,809.07

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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.