Home / 285,128.56-427,220.57-200,475.13

Finding the Fourth Proportional to 285,128.56, 427,220.57 and 200,475.13

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Solution

The fourth proportional to 285,128.56, 427,220.57 and 200,475.13 is: 300,380.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,128.56 : 427,220.57 = 200,475.13 : x
  2. Step 2: Convert to fraction form
    285,128.56/427,220.57 = 200,475.13/x
  3. Step 3: Cross multiply
    285,128.56x = 427,220.57 × 200,475.13
  4. Step 4: Simplify right side
    285,128.56x = 85,647,099,309.42
  5. Step 5: Solve for x
    x = 85,647,099,309.42/285,128.56
  6. Step 6: Final answer
    x = 300,380.64

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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.