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Finding the Fourth Proportional to 259,340.40, 388,855.08 and 101,380.68

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Solution

The fourth proportional to 259,340.40, 388,855.08 and 101,380.68 is: 152,010.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,340.40 : 388,855.08 = 101,380.68 : x
  2. Step 2: Convert to fraction form
    259,340.40/388,855.08 = 101,380.68/x
  3. Step 3: Cross multiply
    259,340.40x = 388,855.08 × 101,380.68
  4. Step 4: Simplify right side
    259,340.40x = 39,422,392,431.85
  5. Step 5: Solve for x
    x = 39,422,392,431.85/259,340.40
  6. Step 6: Final answer
    x = 152,010.22

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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.