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Finding the Fourth Proportional to 300,039.94, 450,076.44 and 89,694.28

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Solution

The fourth proportional to 300,039.94, 450,076.44 and 89,694.28 is: 134,546.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,039.94 : 450,076.44 = 89,694.28 : x
  2. Step 2: Convert to fraction form
    300,039.94/450,076.44 = 89,694.28/x
  3. Step 3: Cross multiply
    300,039.94x = 450,076.44 × 89,694.28
  4. Step 4: Simplify right side
    300,039.94x = 40,369,279,980.38
  5. Step 5: Solve for x
    x = 40,369,279,980.38/300,039.94
  6. Step 6: Final answer
    x = 134,546.36

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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.