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Finding the Fourth Proportional to 352,002.80, 528,004.20 and 331,266.80

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Solution

The fourth proportional to 352,002.80, 528,004.20 and 331,266.80 is: 496,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,002.80 : 528,004.20 = 331,266.80 : x
  2. Step 2: Convert to fraction form
    352,002.80/528,004.20 = 331,266.80/x
  3. Step 3: Cross multiply
    352,002.80x = 528,004.20 × 331,266.80
  4. Step 4: Simplify right side
    352,002.80x = 174,910,261,720.56
  5. Step 5: Solve for x
    x = 174,910,261,720.56/352,002.80
  6. Step 6: Final answer
    x = 496,900.20

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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.