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Finding the Fourth Proportional to 259,187.77, 388,515.03 and 99,226.03

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Solution

The fourth proportional to 259,187.77, 388,515.03 and 99,226.03 is: 148,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,187.77 : 388,515.03 = 99,226.03 : x
  2. Step 2: Convert to fraction form
    259,187.77/388,515.03 = 99,226.03/x
  3. Step 3: Cross multiply
    259,187.77x = 388,515.03 × 99,226.03
  4. Step 4: Simplify right side
    259,187.77x = 38,550,804,022.23
  5. Step 5: Solve for x
    x = 38,550,804,022.23/259,187.77
  6. Step 6: Final answer
    x = 148,736.97

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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.