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Finding the Fourth Proportional to 255,661.80, 383,492.70 and 131,245.80

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Solution

The fourth proportional to 255,661.80, 383,492.70 and 131,245.80 is: 196,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,661.80 : 383,492.70 = 131,245.80 : x
  2. Step 2: Convert to fraction form
    255,661.80/383,492.70 = 131,245.80/x
  3. Step 3: Cross multiply
    255,661.80x = 383,492.70 × 131,245.80
  4. Step 4: Simplify right side
    255,661.80x = 50,331,806,205.66
  5. Step 5: Solve for x
    x = 50,331,806,205.66/255,661.80
  6. Step 6: Final answer
    x = 196,868.70

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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.