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Finding the Fourth Proportional to 264,880.30, 397,369.31 and 87,399.58

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Solution

The fourth proportional to 264,880.30, 397,369.31 and 87,399.58 is: 131,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,880.30 : 397,369.31 = 87,399.58 : x
  2. Step 2: Convert to fraction form
    264,880.30/397,369.31 = 87,399.58/x
  3. Step 3: Cross multiply
    264,880.30x = 397,369.31 × 87,399.58
  4. Step 4: Simplify right side
    264,880.30x = 34,729,910,798.89
  5. Step 5: Solve for x
    x = 34,729,910,798.89/264,880.30
  6. Step 6: Final answer
    x = 131,115.49

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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.