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Finding the Fourth Proportional to 225,591.44, 338,429.88 and 90,665.98

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Solution

The fourth proportional to 225,591.44, 338,429.88 and 90,665.98 is: 136,016.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,591.44 : 338,429.88 = 90,665.98 : x
  2. Step 2: Convert to fraction form
    225,591.44/338,429.88 = 90,665.98/x
  3. Step 3: Cross multiply
    225,591.44x = 338,429.88 × 90,665.98
  4. Step 4: Simplify right side
    225,591.44x = 30,684,076,731.48
  5. Step 5: Solve for x
    x = 30,684,076,731.48/225,591.44
  6. Step 6: Final answer
    x = 136,016.14

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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.