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Finding the Fourth Proportional to 198,672.86, 298,009.21 and 58,431.49

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Solution

The fourth proportional to 198,672.86, 298,009.21 and 58,431.49 is: 87,647.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,672.86 : 298,009.21 = 58,431.49 : x
  2. Step 2: Convert to fraction form
    198,672.86/298,009.21 = 58,431.49/x
  3. Step 3: Cross multiply
    198,672.86x = 298,009.21 × 58,431.49
  4. Step 4: Simplify right side
    198,672.86x = 17,413,122,174.02
  5. Step 5: Solve for x
    x = 17,413,122,174.02/198,672.86
  6. Step 6: Final answer
    x = 87,647.21

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1.5x scale

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.