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Finding the Fourth Proportional to 259,388.40, 388,866.60 and 109,743.60

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Solution

The fourth proportional to 259,388.40, 388,866.60 and 109,743.60 is: 164,524.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,388.40 : 388,866.60 = 109,743.60 : x
  2. Step 2: Convert to fraction form
    259,388.40/388,866.60 = 109,743.60/x
  3. Step 3: Cross multiply
    259,388.40x = 388,866.60 × 109,743.60
  4. Step 4: Simplify right side
    259,388.40x = 42,675,620,603.76
  5. Step 5: Solve for x
    x = 42,675,620,603.76/259,388.40
  6. Step 6: Final answer
    x = 164,524.01

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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.