Home / 259,048.08-388,571.58-81,570.60

Finding the Fourth Proportional to 259,048.08, 388,571.58 and 81,570.60

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Solution

The fourth proportional to 259,048.08, 388,571.58 and 81,570.60 is: 122,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,048.08 : 388,571.58 = 81,570.60 : x
  2. Step 2: Convert to fraction form
    259,048.08/388,571.58 = 81,570.60/x
  3. Step 3: Cross multiply
    259,048.08x = 388,571.58 × 81,570.60
  4. Step 4: Simplify right side
    259,048.08x = 31,696,016,923.55
  5. Step 5: Solve for x
    x = 31,696,016,923.55/259,048.08
  6. Step 6: Final answer
    x = 122,355.73

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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.