Home / 281,833.90-388,930.78-154,510.38

Finding the Fourth Proportional to 281,833.90, 388,930.78 and 154,510.38

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Solution

The fourth proportional to 281,833.90, 388,930.78 and 154,510.38 is: 213,224.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,833.90 : 388,930.78 = 154,510.38 : x
  2. Step 2: Convert to fraction form
    281,833.90/388,930.78 = 154,510.38/x
  3. Step 3: Cross multiply
    281,833.90x = 388,930.78 × 154,510.38
  4. Step 4: Simplify right side
    281,833.90x = 60,093,842,611.50
  5. Step 5: Solve for x
    x = 60,093,842,611.50/281,833.90
  6. Step 6: Final answer
    x = 213,224.32

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1.5x scale

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.