Home / 281,721.03-388,772.78-154,396.32

Finding the Fourth Proportional to 281,721.03, 388,772.78 and 154,396.32

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Solution

The fourth proportional to 281,721.03, 388,772.78 and 154,396.32 is: 213,065.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,721.03 : 388,772.78 = 154,396.32 : x
  2. Step 2: Convert to fraction form
    281,721.03/388,772.78 = 154,396.32/x
  3. Step 3: Cross multiply
    281,721.03x = 388,772.78 × 154,396.32
  4. Step 4: Simplify right side
    281,721.03x = 60,025,086,548.17
  5. Step 5: Solve for x
    x = 60,025,086,548.17/281,721.03
  6. Step 6: Final answer
    x = 213,065.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.