Home / 263,472.21-395,271.19-85,979.54

Finding the Fourth Proportional to 263,472.21, 395,271.19 and 85,979.54

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Solution

The fourth proportional to 263,472.21, 395,271.19 and 85,979.54 is: 128,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,472.21 : 395,271.19 = 85,979.54 : x
  2. Step 2: Convert to fraction form
    263,472.21/395,271.19 = 85,979.54/x
  3. Step 3: Cross multiply
    263,472.21x = 395,271.19 × 85,979.54
  4. Step 4: Simplify right side
    263,472.21x = 33,985,236,187.11
  5. Step 5: Solve for x
    x = 33,985,236,187.11/263,472.21
  6. Step 6: Final answer
    x = 128,989.83

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1.5x scale

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.