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Finding the Fourth Proportional to 323,879.41, 485,801.60 and 99,240.50

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Solution

The fourth proportional to 323,879.41, 485,801.60 and 99,240.50 is: 148,855.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,879.41 : 485,801.60 = 99,240.50 : x
  2. Step 2: Convert to fraction form
    323,879.41/485,801.60 = 99,240.50/x
  3. Step 3: Cross multiply
    323,879.41x = 485,801.60 × 99,240.50
  4. Step 4: Simplify right side
    323,879.41x = 48,211,194,961.33
  5. Step 5: Solve for x
    x = 48,211,194,961.33/323,879.41
  6. Step 6: Final answer
    x = 148,855.39

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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.