Home / 281,265.90-388,149.21-153,942.54

Finding the Fourth Proportional to 281,265.90, 388,149.21 and 153,942.54

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Solution

The fourth proportional to 281,265.90, 388,149.21 and 153,942.54 is: 212,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,265.90 : 388,149.21 = 153,942.54 : x
  2. Step 2: Convert to fraction form
    281,265.90/388,149.21 = 153,942.54/x
  3. Step 3: Cross multiply
    281,265.90x = 388,149.21 × 153,942.54
  4. Step 4: Simplify right side
    281,265.90x = 59,752,675,286.39
  5. Step 5: Solve for x
    x = 59,752,675,286.39/281,265.90
  6. Step 6: Final answer
    x = 212,441.95

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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.