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Finding the Fourth Proportional to 339,321.68, 468,285 and 188,419.76

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Solution

The fourth proportional to 339,321.68, 468,285 and 188,419.76 is: 260,030.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,321.68 : 468,285 = 188,419.76 : x
  2. Step 2: Convert to fraction form
    339,321.68/468,285 = 188,419.76/x
  3. Step 3: Cross multiply
    339,321.68x = 468,285 × 188,419.76
  4. Step 4: Simplify right side
    339,321.68x = 88,234,147,311.60
  5. Step 5: Solve for x
    x = 88,234,147,311.60/339,321.68
  6. Step 6: Final answer
    x = 260,030.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.