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Finding the Fourth Proportional to 279,368.40, 419,052.60 and 110,928.90

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Solution

The fourth proportional to 279,368.40, 419,052.60 and 110,928.90 is: 166,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,368.40 : 419,052.60 = 110,928.90 : x
  2. Step 2: Convert to fraction form
    279,368.40/419,052.60 = 110,928.90/x
  3. Step 3: Cross multiply
    279,368.40x = 419,052.60 × 110,928.90
  4. Step 4: Simplify right side
    279,368.40x = 46,485,043,960.14
  5. Step 5: Solve for x
    x = 46,485,043,960.14/279,368.40
  6. Step 6: Final answer
    x = 166,393.35

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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.