Home / 255,945.12-383,917.68-131,206.56

Finding the Fourth Proportional to 255,945.12, 383,917.68 and 131,206.56

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Solution

The fourth proportional to 255,945.12, 383,917.68 and 131,206.56 is: 196,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,945.12 : 383,917.68 = 131,206.56 : x
  2. Step 2: Convert to fraction form
    255,945.12/383,917.68 = 131,206.56/x
  3. Step 3: Cross multiply
    255,945.12x = 383,917.68 × 131,206.56
  4. Step 4: Simplify right side
    255,945.12x = 50,372,518,115.98
  5. Step 5: Solve for x
    x = 50,372,518,115.98/255,945.12
  6. Step 6: Final answer
    x = 196,809.84

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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.