Home / 281,842.72-388,942.86-154,515.58

Finding the Fourth Proportional to 281,842.72, 388,942.86 and 154,515.58

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Solution

The fourth proportional to 281,842.72, 388,942.86 and 154,515.58 is: 213,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,842.72 : 388,942.86 = 154,515.58 : x
  2. Step 2: Convert to fraction form
    281,842.72/388,942.86 = 154,515.58/x
  3. Step 3: Cross multiply
    281,842.72x = 388,942.86 × 154,515.58
  4. Step 4: Simplify right side
    281,842.72x = 60,097,731,599.76
  5. Step 5: Solve for x
    x = 60,097,731,599.76/281,842.72
  6. Step 6: Final answer
    x = 213,231.45

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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.