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Finding the Fourth Proportional to 352,021.80, 528,032.70 and 339,580.20

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Solution

The fourth proportional to 352,021.80, 528,032.70 and 339,580.20 is: 509,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,021.80 : 528,032.70 = 339,580.20 : x
  2. Step 2: Convert to fraction form
    352,021.80/528,032.70 = 339,580.20/x
  3. Step 3: Cross multiply
    352,021.80x = 528,032.70 × 339,580.20
  4. Step 4: Simplify right side
    352,021.80x = 179,309,449,872.54
  5. Step 5: Solve for x
    x = 179,309,449,872.54/352,021.80
  6. Step 6: Final answer
    x = 509,370.30

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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.