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Finding the Fourth Proportional to 245,471.80, 367,689.30 and 203,999.80

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Solution

The fourth proportional to 245,471.80, 367,689.30 and 203,999.80 is: 305,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,471.80 : 367,689.30 = 203,999.80 : x
  2. Step 2: Convert to fraction form
    245,471.80/367,689.30 = 203,999.80/x
  3. Step 3: Cross multiply
    245,471.80x = 367,689.30 × 203,999.80
  4. Step 4: Simplify right side
    245,471.80x = 75,008,543,662.14
  5. Step 5: Solve for x
    x = 75,008,543,662.14/245,471.80
  6. Step 6: Final answer
    x = 305,568.88

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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.