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Finding the Fourth Proportional to 300,361.68, 450,557.48 and 89,979.60

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Solution

The fourth proportional to 300,361.68, 450,557.48 and 89,979.60 is: 134,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,361.68 : 450,557.48 = 89,979.60 : x
  2. Step 2: Convert to fraction form
    300,361.68/450,557.48 = 89,979.60/x
  3. Step 3: Cross multiply
    300,361.68x = 450,557.48 × 89,979.60
  4. Step 4: Simplify right side
    300,361.68x = 40,540,981,827.41
  5. Step 5: Solve for x
    x = 40,540,981,827.41/300,361.68
  6. Step 6: Final answer
    x = 134,973.88

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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.