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Finding the Fourth Proportional to 485,812.00, 728,811.41 and 186,269.22

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Solution

The fourth proportional to 485,812.00, 728,811.41 and 186,269.22 is: 279,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,812.00 : 728,811.41 = 186,269.22 : x
  2. Step 2: Convert to fraction form
    485,812.00/728,811.41 = 186,269.22/x
  3. Step 3: Cross multiply
    485,812.00x = 728,811.41 × 186,269.22
  4. Step 4: Simplify right side
    485,812.00x = 135,755,131,025.44
  5. Step 5: Solve for x
    x = 135,755,131,025.44/485,812.00
  6. Step 6: Final answer
    x = 279,439.64

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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.