Home / 259,253.88-388,889.22-81,762.60

Finding the Fourth Proportional to 259,253.88, 388,889.22 and 81,762.60

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Solution

The fourth proportional to 259,253.88, 388,889.22 and 81,762.60 is: 122,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,253.88 : 388,889.22 = 81,762.60 : x
  2. Step 2: Convert to fraction form
    259,253.88/388,889.22 = 81,762.60/x
  3. Step 3: Cross multiply
    259,253.88x = 388,889.22 × 81,762.60
  4. Step 4: Simplify right side
    259,253.88x = 31,796,593,739.17
  5. Step 5: Solve for x
    x = 31,796,593,739.17/259,253.88
  6. Step 6: Final answer
    x = 122,646.55

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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.