Home / 428,136.30-641,767.05-250,551.90

Finding the Fourth Proportional to 428,136.30, 641,767.05 and 250,551.90

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Solution

The fourth proportional to 428,136.30, 641,767.05 and 250,551.90 is: 375,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,136.30 : 641,767.05 = 250,551.90 : x
  2. Step 2: Convert to fraction form
    428,136.30/641,767.05 = 250,551.90/x
  3. Step 3: Cross multiply
    428,136.30x = 641,767.05 × 250,551.90
  4. Step 4: Simplify right side
    428,136.30x = 160,795,953,734.90
  5. Step 5: Solve for x
    x = 160,795,953,734.90/428,136.30
  6. Step 6: Final answer
    x = 375,571.88

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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.