Home / 281,325.42-388,230.14-154,012.86

Finding the Fourth Proportional to 281,325.42, 388,230.14 and 154,012.86

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Solution

The fourth proportional to 281,325.42, 388,230.14 and 154,012.86 is: 212,538.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,325.42 : 388,230.14 = 154,012.86 : x
  2. Step 2: Convert to fraction form
    281,325.42/388,230.14 = 154,012.86/x
  3. Step 3: Cross multiply
    281,325.42x = 388,230.14 × 154,012.86
  4. Step 4: Simplify right side
    281,325.42x = 59,792,434,199.60
  5. Step 5: Solve for x
    x = 59,792,434,199.60/281,325.42
  6. Step 6: Final answer
    x = 212,538.33

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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.