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Finding the Fourth Proportional to 352,123, 485,954.85 and 199,162.60

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Solution

The fourth proportional to 352,123, 485,954.85 and 199,162.60 is: 274,858.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,123 : 485,954.85 = 199,162.60 : x
  2. Step 2: Convert to fraction form
    352,123/485,954.85 = 199,162.60/x
  3. Step 3: Cross multiply
    352,123x = 485,954.85 × 199,162.60
  4. Step 4: Simplify right side
    352,123x = 96,784,031,408.61
  5. Step 5: Solve for x
    x = 96,784,031,408.61/352,123
  6. Step 6: Final answer
    x = 274,858.59

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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.