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Finding the Fourth Proportional to 239,418.70, 330,399.94 and 131,992.51

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Solution

The fourth proportional to 239,418.70, 330,399.94 and 131,992.51 is: 182,150.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,418.70 : 330,399.94 = 131,992.51 : x
  2. Step 2: Convert to fraction form
    239,418.70/330,399.94 = 131,992.51/x
  3. Step 3: Cross multiply
    239,418.70x = 330,399.94 × 131,992.51
  4. Step 4: Simplify right side
    239,418.70x = 43,610,317,384.45
  5. Step 5: Solve for x
    x = 43,610,317,384.45/239,418.70
  6. Step 6: Final answer
    x = 182,150.84

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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.