Home / 281,385.81-388,322.19-154,062.30

Finding the Fourth Proportional to 281,385.81, 388,322.19 and 154,062.30

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Solution

The fourth proportional to 281,385.81, 388,322.19 and 154,062.30 is: 212,611.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,385.81 : 388,322.19 = 154,062.30 : x
  2. Step 2: Convert to fraction form
    281,385.81/388,322.19 = 154,062.30/x
  3. Step 3: Cross multiply
    281,385.81x = 388,322.19 × 154,062.30
  4. Step 4: Simplify right side
    281,385.81x = 59,825,809,732.44
  5. Step 5: Solve for x
    x = 59,825,809,732.44/281,385.81
  6. Step 6: Final answer
    x = 212,611.32

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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.