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Finding the Fourth Proportional to 355,680.60, 534,135.30 and 189,792.60

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Solution

The fourth proportional to 355,680.60, 534,135.30 and 189,792.60 is: 285,016.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,680.60 : 534,135.30 = 189,792.60 : x
  2. Step 2: Convert to fraction form
    355,680.60/534,135.30 = 189,792.60/x
  3. Step 3: Cross multiply
    355,680.60x = 534,135.30 × 189,792.60
  4. Step 4: Simplify right side
    355,680.60x = 101,374,927,338.78
  5. Step 5: Solve for x
    x = 101,374,927,338.78/355,680.60
  6. Step 6: Final answer
    x = 285,016.75

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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.