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Finding the Fourth Proportional to 300,072.48, 450,096.48 and 75,434.40

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Solution

The fourth proportional to 300,072.48, 450,096.48 and 75,434.40 is: 113,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,072.48 : 450,096.48 = 75,434.40 : x
  2. Step 2: Convert to fraction form
    300,072.48/450,096.48 = 75,434.40/x
  3. Step 3: Cross multiply
    300,072.48x = 450,096.48 × 75,434.40
  4. Step 4: Simplify right side
    300,072.48x = 33,952,757,910.91
  5. Step 5: Solve for x
    x = 33,952,757,910.91/300,072.48
  6. Step 6: Final answer
    x = 113,148.52

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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.