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Finding the Fourth Proportional to 400,218.24, 599,660.96 and 281,640.48

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Solution

The fourth proportional to 400,218.24, 599,660.96 and 281,640.48 is: 421,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,218.24 : 599,660.96 = 281,640.48 : x
  2. Step 2: Convert to fraction form
    400,218.24/599,660.96 = 281,640.48/x
  3. Step 3: Cross multiply
    400,218.24x = 599,660.96 × 281,640.48
  4. Step 4: Simplify right side
    400,218.24x = 168,888,800,611.66
  5. Step 5: Solve for x
    x = 168,888,800,611.66/400,218.24
  6. Step 6: Final answer
    x = 421,991.76

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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.