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Finding the Fourth Proportional to 351,702.38, 485,369.80 and 198,736.68

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Solution

The fourth proportional to 351,702.38, 485,369.80 and 198,736.68 is: 274,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,702.38 : 485,369.80 = 198,736.68 : x
  2. Step 2: Convert to fraction form
    351,702.38/485,369.80 = 198,736.68/x
  3. Step 3: Cross multiply
    351,702.38x = 485,369.80 × 198,736.68
  4. Step 4: Simplify right side
    351,702.38x = 96,460,782,624.26
  5. Step 5: Solve for x
    x = 96,460,782,624.26/351,702.38
  6. Step 6: Final answer
    x = 274,268.21

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1.5x scale

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.