Home / 281,760.28-388,838.82-154,435.84

Finding the Fourth Proportional to 281,760.28, 388,838.82 and 154,435.84

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Solution

The fourth proportional to 281,760.28, 388,838.82 and 154,435.84 is: 213,126.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,760.28 : 388,838.82 = 154,435.84 : x
  2. Step 2: Convert to fraction form
    281,760.28/388,838.82 = 154,435.84/x
  3. Step 3: Cross multiply
    281,760.28x = 388,838.82 × 154,435.84
  4. Step 4: Simplify right side
    281,760.28x = 60,050,649,791.31
  5. Step 5: Solve for x
    x = 60,050,649,791.31/281,760.28
  6. Step 6: Final answer
    x = 213,126.74

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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.