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Finding the Fourth Proportional to 259,147.98, 388,583.46 and 81,607.32

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Solution

The fourth proportional to 259,147.98, 388,583.46 and 81,607.32 is: 122,367.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,147.98 : 388,583.46 = 81,607.32 : x
  2. Step 2: Convert to fraction form
    259,147.98/388,583.46 = 81,607.32/x
  3. Step 3: Cross multiply
    259,147.98x = 388,583.46 × 81,607.32
  4. Step 4: Simplify right side
    259,147.98x = 31,711,254,766.93
  5. Step 5: Solve for x
    x = 31,711,254,766.93/259,147.98
  6. Step 6: Final answer
    x = 122,367.36

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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.