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Finding the Fourth Proportional to 199,493.91, 298,902.60 and 120,442.10

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Solution

The fourth proportional to 199,493.91, 298,902.60 and 120,442.10 is: 180,458.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,493.91 : 298,902.60 = 120,442.10 : x
  2. Step 2: Convert to fraction form
    199,493.91/298,902.60 = 120,442.10/x
  3. Step 3: Cross multiply
    199,493.91x = 298,902.60 × 120,442.10
  4. Step 4: Simplify right side
    199,493.91x = 36,000,455,344.95
  5. Step 5: Solve for x
    x = 36,000,455,344.95/199,493.91
  6. Step 6: Final answer
    x = 180,458.92

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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.