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Finding the Fourth Proportional to 424,453.44, 636,544.83 and 140,091.20

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Solution

The fourth proportional to 424,453.44, 636,544.83 and 140,091.20 is: 210,092.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,453.44 : 636,544.83 = 140,091.20 : x
  2. Step 2: Convert to fraction form
    424,453.44/636,544.83 = 140,091.20/x
  3. Step 3: Cross multiply
    424,453.44x = 636,544.83 × 140,091.20
  4. Step 4: Simplify right side
    424,453.44x = 89,174,326,796.68
  5. Step 5: Solve for x
    x = 89,174,326,796.68/424,453.44
  6. Step 6: Final answer
    x = 210,092.13

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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.