Home / 215,940.78-298,021.41-120,480.66

Finding the Fourth Proportional to 215,940.78, 298,021.41 and 120,480.66

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Solution

The fourth proportional to 215,940.78, 298,021.41 and 120,480.66 is: 166,276.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,940.78 : 298,021.41 = 120,480.66 : x
  2. Step 2: Convert to fraction form
    215,940.78/298,021.41 = 120,480.66/x
  3. Step 3: Cross multiply
    215,940.78x = 298,021.41 × 120,480.66
  4. Step 4: Simplify right side
    215,940.78x = 35,905,816,170.93
  5. Step 5: Solve for x
    x = 35,905,816,170.93/215,940.78
  6. Step 6: Final answer
    x = 166,276.22

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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.