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Finding the Fourth Proportional to 455,090.73, 682,940.81 and 188,851.50

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Solution

The fourth proportional to 455,090.73, 682,940.81 and 188,851.50 is: 283,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,090.73 : 682,940.81 = 188,851.50 : x
  2. Step 2: Convert to fraction form
    455,090.73/682,940.81 = 188,851.50/x
  3. Step 3: Cross multiply
    455,090.73x = 682,940.81 × 188,851.50
  4. Step 4: Simplify right side
    455,090.73x = 128,974,396,379.72
  5. Step 5: Solve for x
    x = 128,974,396,379.72/455,090.73
  6. Step 6: Final answer
    x = 283,403.70

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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.