Home / 281,701.08-388,757.45-154,376.69

Finding the Fourth Proportional to 281,701.08, 388,757.45 and 154,376.69

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Solution

The fourth proportional to 281,701.08, 388,757.45 and 154,376.69 is: 213,045.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,701.08 : 388,757.45 = 154,376.69 : x
  2. Step 2: Convert to fraction form
    281,701.08/388,757.45 = 154,376.69/x
  3. Step 3: Cross multiply
    281,701.08x = 388,757.45 × 154,376.69
  4. Step 4: Simplify right side
    281,701.08x = 60,015,086,786.00
  5. Step 5: Solve for x
    x = 60,015,086,786.00/281,701.08
  6. Step 6: Final answer
    x = 213,045.28

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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.