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Finding the Fourth Proportional to 279,958.80, 419,938.20 and 173,670.60

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Solution

The fourth proportional to 279,958.80, 419,938.20 and 173,670.60 is: 260,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,958.80 : 419,938.20 = 173,670.60 : x
  2. Step 2: Convert to fraction form
    279,958.80/419,938.20 = 173,670.60/x
  3. Step 3: Cross multiply
    279,958.80x = 419,938.20 × 173,670.60
  4. Step 4: Simplify right side
    279,958.80x = 72,930,919,156.92
  5. Step 5: Solve for x
    x = 72,930,919,156.92/279,958.80
  6. Step 6: Final answer
    x = 260,505.90

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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.