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Finding the Fourth Proportional to 255,697.71, 383,546.25 and 68,709.21

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Solution

The fourth proportional to 255,697.71, 383,546.25 and 68,709.21 is: 103,063.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,697.71 : 383,546.25 = 68,709.21 : x
  2. Step 2: Convert to fraction form
    255,697.71/383,546.25 = 68,709.21/x
  3. Step 3: Cross multiply
    255,697.71x = 383,546.25 × 68,709.21
  4. Step 4: Simplify right side
    255,697.71x = 26,353,159,835.96
  5. Step 5: Solve for x
    x = 26,353,159,835.96/255,697.71
  6. Step 6: Final answer
    x = 103,063.73

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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.