Home / 221,850.58-306,216.60-131,238.04

Finding the Fourth Proportional to 221,850.58, 306,216.60 and 131,238.04

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Solution

The fourth proportional to 221,850.58, 306,216.60 and 131,238.04 is: 181,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,850.58 : 306,216.60 = 131,238.04 : x
  2. Step 2: Convert to fraction form
    221,850.58/306,216.60 = 131,238.04/x
  3. Step 3: Cross multiply
    221,850.58x = 306,216.60 × 131,238.04
  4. Step 4: Simplify right side
    221,850.58x = 40,187,266,399.46
  5. Step 5: Solve for x
    x = 40,187,266,399.46/221,850.58
  6. Step 6: Final answer
    x = 181,145.64

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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.