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Finding the Fourth Proportional to 265,147.57, 397,634.95 and 87,621.49

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Solution

The fourth proportional to 265,147.57, 397,634.95 and 87,621.49 is: 131,403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,147.57 : 397,634.95 = 87,621.49 : x
  2. Step 2: Convert to fraction form
    265,147.57/397,634.95 = 87,621.49/x
  3. Step 3: Cross multiply
    265,147.57x = 397,634.95 × 87,621.49
  4. Step 4: Simplify right side
    265,147.57x = 34,841,366,795.08
  5. Step 5: Solve for x
    x = 34,841,366,795.08/265,147.57
  6. Step 6: Final answer
    x = 131,403.68

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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.