Home / 281,277.78-388,148.36-153,928.76

Finding the Fourth Proportional to 281,277.78, 388,148.36 and 153,928.76

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Solution

The fourth proportional to 281,277.78, 388,148.36 and 153,928.76 is: 212,413.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,277.78 : 388,148.36 = 153,928.76 : x
  2. Step 2: Convert to fraction form
    281,277.78/388,148.36 = 153,928.76/x
  3. Step 3: Cross multiply
    281,277.78x = 388,148.36 × 153,928.76
  4. Step 4: Simplify right side
    281,277.78x = 59,747,195,750.83
  5. Step 5: Solve for x
    x = 59,747,195,750.83/281,277.78
  6. Step 6: Final answer
    x = 212,413.49

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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.