Home / 331,128.56-496,642.44-120,766.64

Finding the Fourth Proportional to 331,128.56, 496,642.44 and 120,766.64

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Solution

The fourth proportional to 331,128.56, 496,642.44 and 120,766.64 is: 181,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,128.56 : 496,642.44 = 120,766.64 : x
  2. Step 2: Convert to fraction form
    331,128.56/496,642.44 = 120,766.64/x
  3. Step 3: Cross multiply
    331,128.56x = 496,642.44 × 120,766.64
  4. Step 4: Simplify right side
    331,128.56x = 59,977,838,760.20
  5. Step 5: Solve for x
    x = 59,977,838,760.20/331,128.56
  6. Step 6: Final answer
    x = 181,131.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.