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Finding the Fourth Proportional to 321,607.58, 443,845.71 and 178,413.75

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Solution

The fourth proportional to 321,607.58, 443,845.71 and 178,413.75 is: 246,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,607.58 : 443,845.71 = 178,413.75 : x
  2. Step 2: Convert to fraction form
    321,607.58/443,845.71 = 178,413.75/x
  3. Step 3: Cross multiply
    321,607.58x = 443,845.71 × 178,413.75
  4. Step 4: Simplify right side
    321,607.58x = 79,188,177,542.51
  5. Step 5: Solve for x
    x = 79,188,177,542.51/321,607.58
  6. Step 6: Final answer
    x = 246,226.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.