Home / 259,266.96-388,914.48-81,787.32

Finding the Fourth Proportional to 259,266.96, 388,914.48 and 81,787.32

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Solution

The fourth proportional to 259,266.96, 388,914.48 and 81,787.32 is: 122,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,266.96 : 388,914.48 = 81,787.32 : x
  2. Step 2: Convert to fraction form
    259,266.96/388,914.48 = 81,787.32/x
  3. Step 3: Cross multiply
    259,266.96x = 388,914.48 × 81,787.32
  4. Step 4: Simplify right side
    259,266.96x = 31,808,273,028.39
  5. Step 5: Solve for x
    x = 31,808,273,028.39/259,266.96
  6. Step 6: Final answer
    x = 122,685.41

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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.