Home / 281,830.05-388,922.58-154,505.34

Finding the Fourth Proportional to 281,830.05, 388,922.58 and 154,505.34

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Solution

The fourth proportional to 281,830.05, 388,922.58 and 154,505.34 is: 213,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,830.05 : 388,922.58 = 154,505.34 : x
  2. Step 2: Convert to fraction form
    281,830.05/388,922.58 = 154,505.34/x
  3. Step 3: Cross multiply
    281,830.05x = 388,922.58 × 154,505.34
  4. Step 4: Simplify right side
    281,830.05x = 60,090,615,456.58
  5. Step 5: Solve for x
    x = 60,090,615,456.58/281,830.05
  6. Step 6: Final answer
    x = 213,215.79

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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.