Home / 281,839.56-388,928.28-154,512.36

Finding the Fourth Proportional to 281,839.56, 388,928.28 and 154,512.36

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Solution

The fourth proportional to 281,839.56, 388,928.28 and 154,512.36 is: 213,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,839.56 : 388,928.28 = 154,512.36 : x
  2. Step 2: Convert to fraction form
    281,839.56/388,928.28 = 154,512.36/x
  3. Step 3: Cross multiply
    281,839.56x = 388,928.28 × 154,512.36
  4. Step 4: Simplify right side
    281,839.56x = 60,094,226,413.54
  5. Step 5: Solve for x
    x = 60,094,226,413.54/281,839.56
  6. Step 6: Final answer
    x = 213,221.40

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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.