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Finding the Fourth Proportional to 207,923.20, 311,884.80 and 113,444.80

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Solution

The fourth proportional to 207,923.20, 311,884.80 and 113,444.80 is: 170,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,923.20 : 311,884.80 = 113,444.80 : x
  2. Step 2: Convert to fraction form
    207,923.20/311,884.80 = 113,444.80/x
  3. Step 3: Cross multiply
    207,923.20x = 311,884.80 × 113,444.80
  4. Step 4: Simplify right side
    207,923.20x = 35,381,708,759.04
  5. Step 5: Solve for x
    x = 35,381,708,759.04/207,923.20
  6. Step 6: Final answer
    x = 170,167.20

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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.