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Finding the Fourth Proportional to 279,958.10, 419,937.15 and 92,969.60

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Solution

The fourth proportional to 279,958.10, 419,937.15 and 92,969.60 is: 139,454.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,958.10 : 419,937.15 = 92,969.60 : x
  2. Step 2: Convert to fraction form
    279,958.10/419,937.15 = 92,969.60/x
  3. Step 3: Cross multiply
    279,958.10x = 419,937.15 × 92,969.60
  4. Step 4: Simplify right side
    279,958.10x = 39,041,388,860.64
  5. Step 5: Solve for x
    x = 39,041,388,860.64/279,958.10
  6. Step 6: Final answer
    x = 139,454.40

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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.