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Finding the Fourth Proportional to 352,046.20, 528,069.30 and 339,604.60

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Solution

The fourth proportional to 352,046.20, 528,069.30 and 339,604.60 is: 509,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,046.20 : 528,069.30 = 339,604.60 : x
  2. Step 2: Convert to fraction form
    352,046.20/528,069.30 = 339,604.60/x
  3. Step 3: Cross multiply
    352,046.20x = 528,069.30 × 339,604.60
  4. Step 4: Simplify right side
    352,046.20x = 179,334,763,398.78
  5. Step 5: Solve for x
    x = 179,334,763,398.78/352,046.20
  6. Step 6: Final answer
    x = 509,406.90

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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.