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Finding the Fourth Proportional to 331,640.70, 497,169.45 and 198,573.90

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Solution

The fourth proportional to 331,640.70, 497,169.45 and 198,573.90 is: 297,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,640.70 : 497,169.45 = 198,573.90 : x
  2. Step 2: Convert to fraction form
    331,640.70/497,169.45 = 198,573.90/x
  3. Step 3: Cross multiply
    331,640.70x = 497,169.45 × 198,573.90
  4. Step 4: Simplify right side
    331,640.70x = 98,724,876,647.36
  5. Step 5: Solve for x
    x = 98,724,876,647.36/331,640.70
  6. Step 6: Final answer
    x = 297,686.25

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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.