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Finding the Fourth Proportional to 382,576.80, 528,057.36 and 269,450.40

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Solution

The fourth proportional to 382,576.80, 528,057.36 and 269,450.40 is: 371,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,576.80 : 528,057.36 = 269,450.40 : x
  2. Step 2: Convert to fraction form
    382,576.80/528,057.36 = 269,450.40/x
  3. Step 3: Cross multiply
    382,576.80x = 528,057.36 × 269,450.40
  4. Step 4: Simplify right side
    382,576.80x = 142,285,266,874.94
  5. Step 5: Solve for x
    x = 142,285,266,874.94/382,576.80
  6. Step 6: Final answer
    x = 371,912.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.