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Finding the Fourth Proportional to 352,006.20, 528,009.30 and 339,564.60

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Solution

The fourth proportional to 352,006.20, 528,009.30 and 339,564.60 is: 509,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,006.20 : 528,009.30 = 339,564.60 : x
  2. Step 2: Convert to fraction form
    352,006.20/528,009.30 = 339,564.60/x
  3. Step 3: Cross multiply
    352,006.20x = 528,009.30 × 339,564.60
  4. Step 4: Simplify right side
    352,006.20x = 179,293,266,750.78
  5. Step 5: Solve for x
    x = 179,293,266,750.78/352,006.20
  6. Step 6: Final answer
    x = 509,346.90

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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.