Home / 220,670.22-331,054.54-80,428.85

Finding the Fourth Proportional to 220,670.22, 331,054.54 and 80,428.85

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Solution

The fourth proportional to 220,670.22, 331,054.54 and 80,428.85 is: 120,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,670.22 : 331,054.54 = 80,428.85 : x
  2. Step 2: Convert to fraction form
    220,670.22/331,054.54 = 80,428.85/x
  3. Step 3: Cross multiply
    220,670.22x = 331,054.54 × 80,428.85
  4. Step 4: Simplify right side
    220,670.22x = 26,626,335,939.48
  5. Step 5: Solve for x
    x = 26,626,335,939.48/220,670.22
  6. Step 6: Final answer
    x = 120,661.21

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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.