Home / 263,472.28-395,271.29-85,979.61

Finding the Fourth Proportional to 263,472.28, 395,271.29 and 85,979.61

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Solution

The fourth proportional to 263,472.28, 395,271.29 and 85,979.61 is: 128,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,472.28 : 395,271.29 = 85,979.61 : x
  2. Step 2: Convert to fraction form
    263,472.28/395,271.29 = 85,979.61/x
  3. Step 3: Cross multiply
    263,472.28x = 395,271.29 × 85,979.61
  4. Step 4: Simplify right side
    263,472.28x = 33,985,268,952.14
  5. Step 5: Solve for x
    x = 33,985,268,952.14/263,472.28
  6. Step 6: Final answer
    x = 128,989.92

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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.