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Finding the Fourth Proportional to 255,883.91, 383,742.73 and 85,059.73

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Solution

The fourth proportional to 255,883.91, 383,742.73 and 85,059.73 is: 127,561.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,883.91 : 383,742.73 = 85,059.73 : x
  2. Step 2: Convert to fraction form
    255,883.91/383,742.73 = 85,059.73/x
  3. Step 3: Cross multiply
    255,883.91x = 383,742.73 × 85,059.73
  4. Step 4: Simplify right side
    255,883.91x = 32,641,053,589.27
  5. Step 5: Solve for x
    x = 32,641,053,589.27/255,883.91
  6. Step 6: Final answer
    x = 127,561.96

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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.