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Finding the Fourth Proportional to 198,798.73, 298,256.87 and 114,619.28

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Solution

The fourth proportional to 198,798.73, 298,256.87 and 114,619.28 is: 171,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,798.73 : 298,256.87 = 114,619.28 : x
  2. Step 2: Convert to fraction form
    198,798.73/298,256.87 = 114,619.28/x
  3. Step 3: Cross multiply
    198,798.73x = 298,256.87 × 114,619.28
  4. Step 4: Simplify right side
    198,798.73x = 34,185,987,694.45
  5. Step 5: Solve for x
    x = 34,185,987,694.45/198,798.73
  6. Step 6: Final answer
    x = 171,962.81

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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.