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Finding the Fourth Proportional to 239,305.88, 330,244.28 and 131,879.76

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Solution

The fourth proportional to 239,305.88, 330,244.28 and 131,879.76 is: 181,995.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,305.88 : 330,244.28 = 131,879.76 : x
  2. Step 2: Convert to fraction form
    239,305.88/330,244.28 = 131,879.76/x
  3. Step 3: Cross multiply
    239,305.88x = 330,244.28 × 131,879.76
  4. Step 4: Simplify right side
    239,305.88x = 43,552,535,728.37
  5. Step 5: Solve for x
    x = 43,552,535,728.37/239,305.88
  6. Step 6: Final answer
    x = 181,995.26

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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.