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Finding the Fourth Proportional to 279,936.40, 419,904.60 and 274,104.40

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Solution

The fourth proportional to 279,936.40, 419,904.60 and 274,104.40 is: 411,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936.40 : 419,904.60 = 274,104.40 : x
  2. Step 2: Convert to fraction form
    279,936.40/419,904.60 = 274,104.40/x
  3. Step 3: Cross multiply
    279,936.40x = 419,904.60 × 274,104.40
  4. Step 4: Simplify right side
    279,936.40x = 115,097,698,440.24
  5. Step 5: Solve for x
    x = 115,097,698,440.24/279,936.40
  6. Step 6: Final answer
    x = 411,156.60

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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.