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Finding the Fourth Proportional to 255,778.92, 383,667.84 and 68,790.60

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Solution

The fourth proportional to 255,778.92, 383,667.84 and 68,790.60 is: 103,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,778.92 : 383,667.84 = 68,790.60 : x
  2. Step 2: Convert to fraction form
    255,778.92/383,667.84 = 68,790.60/x
  3. Step 3: Cross multiply
    255,778.92x = 383,667.84 × 68,790.60
  4. Step 4: Simplify right side
    255,778.92x = 26,392,740,914.30
  5. Step 5: Solve for x
    x = 26,392,740,914.30/255,778.92
  6. Step 6: Final answer
    x = 103,185.75

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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.