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Finding the Fourth Proportional to 351,528.60, 485,099.10 and 198,573.96

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Solution

The fourth proportional to 351,528.60, 485,099.10 and 198,573.96 is: 274,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,528.60 : 485,099.10 = 198,573.96 : x
  2. Step 2: Convert to fraction form
    351,528.60/485,099.10 = 198,573.96/x
  3. Step 3: Cross multiply
    351,528.60x = 485,099.10 × 198,573.96
  4. Step 4: Simplify right side
    351,528.60x = 96,328,049,279.44
  5. Step 5: Solve for x
    x = 96,328,049,279.44/351,528.60
  6. Step 6: Final answer
    x = 274,026.21

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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.