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Finding the Fourth Proportional to 352,178.60, 528,267.90 and 331,442.60

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Solution

The fourth proportional to 352,178.60, 528,267.90 and 331,442.60 is: 497,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,178.60 : 528,267.90 = 331,442.60 : x
  2. Step 2: Convert to fraction form
    352,178.60/528,267.90 = 331,442.60/x
  3. Step 3: Cross multiply
    352,178.60x = 528,267.90 × 331,442.60
  4. Step 4: Simplify right side
    352,178.60x = 175,090,486,272.54
  5. Step 5: Solve for x
    x = 175,090,486,272.54/352,178.60
  6. Step 6: Final answer
    x = 497,163.90

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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.