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Finding the Fourth Proportional to 198,804.72, 298,146.60 and 56,661.60

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Solution

The fourth proportional to 198,804.72, 298,146.60 and 56,661.60 is: 84,975.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,804.72 : 298,146.60 = 56,661.60 : x
  2. Step 2: Convert to fraction form
    198,804.72/298,146.60 = 56,661.60/x
  3. Step 3: Cross multiply
    198,804.72x = 298,146.60 × 56,661.60
  4. Step 4: Simplify right side
    198,804.72x = 16,893,463,390.56
  5. Step 5: Solve for x
    x = 16,893,463,390.56/198,804.72
  6. Step 6: Final answer
    x = 84,975.16

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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.