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Finding the Fourth Proportional to 264,858.05, 397,244.51 and 72,687.57

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Solution

The fourth proportional to 264,858.05, 397,244.51 and 72,687.57 is: 109,019.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,858.05 : 397,244.51 = 72,687.57 : x
  2. Step 2: Convert to fraction form
    264,858.05/397,244.51 = 72,687.57/x
  3. Step 3: Cross multiply
    264,858.05x = 397,244.51 × 72,687.57
  4. Step 4: Simplify right side
    264,858.05x = 28,874,739,253.97
  5. Step 5: Solve for x
    x = 28,874,739,253.97/264,858.05
  6. Step 6: Final answer
    x = 109,019.68

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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.