Home / 215,941.78-298,022.79-120,481.66

Finding the Fourth Proportional to 215,941.78, 298,022.79 and 120,481.66

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Solution

The fourth proportional to 215,941.78, 298,022.79 and 120,481.66 is: 166,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,941.78 : 298,022.79 = 120,481.66 : x
  2. Step 2: Convert to fraction form
    215,941.78/298,022.79 = 120,481.66/x
  3. Step 3: Cross multiply
    215,941.78x = 298,022.79 × 120,481.66
  4. Step 4: Simplify right side
    215,941.78x = 35,906,280,457.03
  5. Step 5: Solve for x
    x = 35,906,280,457.03/215,941.78
  6. Step 6: Final answer
    x = 166,277.60

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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.