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Finding the Fourth Proportional to 490,268.92, 735,440.64 and 190,620.76

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Solution

The fourth proportional to 490,268.92, 735,440.64 and 190,620.76 is: 285,945.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,268.92 : 735,440.64 = 190,620.76 : x
  2. Step 2: Convert to fraction form
    490,268.92/735,440.64 = 190,620.76/x
  3. Step 3: Cross multiply
    490,268.92x = 735,440.64 × 190,620.76
  4. Step 4: Simplify right side
    490,268.92x = 140,190,251,893.09
  5. Step 5: Solve for x
    x = 140,190,251,893.09/490,268.92
  6. Step 6: Final answer
    x = 285,945.62

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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.