Home / 239,150.30-330,042.38-131,720.31

Finding the Fourth Proportional to 239,150.30, 330,042.38 and 131,720.31

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Solution

The fourth proportional to 239,150.30, 330,042.38 and 131,720.31 is: 181,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,150.30 : 330,042.38 = 131,720.31 : x
  2. Step 2: Convert to fraction form
    239,150.30/330,042.38 = 131,720.31/x
  3. Step 3: Cross multiply
    239,150.30x = 330,042.38 × 131,720.31
  4. Step 4: Simplify right side
    239,150.30x = 43,473,283,948.14
  5. Step 5: Solve for x
    x = 43,473,283,948.14/239,150.30
  6. Step 6: Final answer
    x = 181,782.27

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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.