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Finding the Fourth Proportional to 253,222.70, 379,834.05 and 103,364.60

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Solution

The fourth proportional to 253,222.70, 379,834.05 and 103,364.60 is: 155,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,222.70 : 379,834.05 = 103,364.60 : x
  2. Step 2: Convert to fraction form
    253,222.70/379,834.05 = 103,364.60/x
  3. Step 3: Cross multiply
    253,222.70x = 379,834.05 × 103,364.60
  4. Step 4: Simplify right side
    253,222.70x = 39,261,394,644.63
  5. Step 5: Solve for x
    x = 39,261,394,644.63/253,222.70
  6. Step 6: Final answer
    x = 155,046.90

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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.