Home / 520,076.26-780,321.32-200,142.23

Finding the Fourth Proportional to 520,076.26, 780,321.32 and 200,142.23

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Solution

The fourth proportional to 520,076.26, 780,321.32 and 200,142.23 is: 300,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,076.26 : 780,321.32 = 200,142.23 : x
  2. Step 2: Convert to fraction form
    520,076.26/780,321.32 = 200,142.23/x
  3. Step 3: Cross multiply
    520,076.26x = 780,321.32 × 200,142.23
  4. Step 4: Simplify right side
    520,076.26x = 156,175,244,949.56
  5. Step 5: Solve for x
    x = 156,175,244,949.56/520,076.26
  6. Step 6: Final answer
    x = 300,292.97

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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.