Home / 281,361.28-422,083.64-81,683.32

Finding the Fourth Proportional to 281,361.28, 422,083.64 and 81,683.32

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Solution

The fourth proportional to 281,361.28, 422,083.64 and 81,683.32 is: 122,537.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,361.28 : 422,083.64 = 81,683.32 : x
  2. Step 2: Convert to fraction form
    281,361.28/422,083.64 = 81,683.32/x
  3. Step 3: Cross multiply
    281,361.28x = 422,083.64 × 81,683.32
  4. Step 4: Simplify right side
    281,361.28x = 34,477,193,032.88
  5. Step 5: Solve for x
    x = 34,477,193,032.88/281,361.28
  6. Step 6: Final answer
    x = 122,537.09

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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.