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Finding the Fourth Proportional to 355,052.30, 489,969.68 and 193,907.39

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Solution

The fourth proportional to 355,052.30, 489,969.68 and 193,907.39 is: 267,590.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,052.30 : 489,969.68 = 193,907.39 : x
  2. Step 2: Convert to fraction form
    355,052.30/489,969.68 = 193,907.39/x
  3. Step 3: Cross multiply
    355,052.30x = 489,969.68 × 193,907.39
  4. Step 4: Simplify right side
    355,052.30x = 95,008,738,408.55
  5. Step 5: Solve for x
    x = 95,008,738,408.55/355,052.30
  6. Step 6: Final answer
    x = 267,590.83

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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.