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Finding the Fourth Proportional to 255,737.80, 383,606.70 and 131,321.80

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Solution

The fourth proportional to 255,737.80, 383,606.70 and 131,321.80 is: 196,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,737.80 : 383,606.70 = 131,321.80 : x
  2. Step 2: Convert to fraction form
    255,737.80/383,606.70 = 131,321.80/x
  3. Step 3: Cross multiply
    255,737.80x = 383,606.70 × 131,321.80
  4. Step 4: Simplify right side
    255,737.80x = 50,375,922,336.06
  5. Step 5: Solve for x
    x = 50,375,922,336.06/255,737.80
  6. Step 6: Final answer
    x = 196,982.70

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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.