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Finding the Fourth Proportional to 353,998.76, 488,512.60 and 192,855.76

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Solution

The fourth proportional to 353,998.76, 488,512.60 and 192,855.76 is: 266,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,998.76 : 488,512.60 = 192,855.76 : x
  2. Step 2: Convert to fraction form
    353,998.76/488,512.60 = 192,855.76/x
  3. Step 3: Cross multiply
    353,998.76x = 488,512.60 × 192,855.76
  4. Step 4: Simplify right side
    353,998.76x = 94,212,468,742.58
  5. Step 5: Solve for x
    x = 94,212,468,742.58/353,998.76
  6. Step 6: Final answer
    x = 266,137.85

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1.5x scale

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.