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Finding the Fourth Proportional to 250,163.85, 375,256.71 and 81,682.86

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Solution

The fourth proportional to 250,163.85, 375,256.71 and 81,682.86 is: 122,527.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,163.85 : 375,256.71 = 81,682.86 : x
  2. Step 2: Convert to fraction form
    250,163.85/375,256.71 = 81,682.86/x
  3. Step 3: Cross multiply
    250,163.85x = 375,256.71 × 81,682.86
  4. Step 4: Simplify right side
    250,163.85x = 30,652,041,306.99
  5. Step 5: Solve for x
    x = 30,652,041,306.99/250,163.85
  6. Step 6: Final answer
    x = 122,527.86

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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.