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Finding the Fourth Proportional to 252,092.85, 378,286.89 and 139,866.94

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Solution

The fourth proportional to 252,092.85, 378,286.89 and 139,866.94 is: 209,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,092.85 : 378,286.89 = 139,866.94 : x
  2. Step 2: Convert to fraction form
    252,092.85/378,286.89 = 139,866.94/x
  3. Step 3: Cross multiply
    252,092.85x = 378,286.89 × 139,866.94
  4. Step 4: Simplify right side
    252,092.85x = 52,909,829,746.42
  5. Step 5: Solve for x
    x = 52,909,829,746.42/252,092.85
  6. Step 6: Final answer
    x = 209,882.31

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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.