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Finding the Fourth Proportional to 264,072.72, 396,081 and 74,528.40

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Solution

The fourth proportional to 264,072.72, 396,081 and 74,528.40 is: 111,784.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,072.72 : 396,081 = 74,528.40 : x
  2. Step 2: Convert to fraction form
    264,072.72/396,081 = 74,528.40/x
  3. Step 3: Cross multiply
    264,072.72x = 396,081 × 74,528.40
  4. Step 4: Simplify right side
    264,072.72x = 29,519,283,200.40
  5. Step 5: Solve for x
    x = 29,519,283,200.40/264,072.72
  6. Step 6: Final answer
    x = 111,784.68

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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.