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Finding the Fourth Proportional to 351,408.83, 484,891.86 and 198,443.98

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Solution

The fourth proportional to 351,408.83, 484,891.86 and 198,443.98 is: 273,823.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,408.83 : 484,891.86 = 198,443.98 : x
  2. Step 2: Convert to fraction form
    351,408.83/484,891.86 = 198,443.98/x
  3. Step 3: Cross multiply
    351,408.83x = 484,891.86 × 198,443.98
  4. Step 4: Simplify right side
    351,408.83x = 96,223,870,410.74
  5. Step 5: Solve for x
    x = 96,223,870,410.74/351,408.83
  6. Step 6: Final answer
    x = 273,823.15

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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.