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Finding the Fourth Proportional to 265,324.20, 397,986.30 and 87,858.60

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Solution

The fourth proportional to 265,324.20, 397,986.30 and 87,858.60 is: 131,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,324.20 : 397,986.30 = 87,858.60 : x
  2. Step 2: Convert to fraction form
    265,324.20/397,986.30 = 87,858.60/x
  3. Step 3: Cross multiply
    265,324.20x = 397,986.30 × 87,858.60
  4. Step 4: Simplify right side
    265,324.20x = 34,966,519,137.18
  5. Step 5: Solve for x
    x = 34,966,519,137.18/265,324.20
  6. Step 6: Final answer
    x = 131,787.90

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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.