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Finding the Fourth Proportional to 351,108.86, 484,530.05 and 198,179.15

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Solution

The fourth proportional to 351,108.86, 484,530.05 and 198,179.15 is: 273,487.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,108.86 : 484,530.05 = 198,179.15 : x
  2. Step 2: Convert to fraction form
    351,108.86/484,530.05 = 198,179.15/x
  3. Step 3: Cross multiply
    351,108.86x = 484,530.05 × 198,179.15
  4. Step 4: Simplify right side
    351,108.86x = 96,023,751,531.26
  5. Step 5: Solve for x
    x = 96,023,751,531.26/351,108.86
  6. Step 6: Final answer
    x = 273,487.12

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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.