Home / 281,247.03-388,121.55-153,930.84

Finding the Fourth Proportional to 281,247.03, 388,121.55 and 153,930.84

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Solution

The fourth proportional to 281,247.03, 388,121.55 and 153,930.84 is: 212,424.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,247.03 : 388,121.55 = 153,930.84 : x
  2. Step 2: Convert to fraction form
    281,247.03/388,121.55 = 153,930.84/x
  3. Step 3: Cross multiply
    281,247.03x = 388,121.55 × 153,930.84
  4. Step 4: Simplify right side
    281,247.03x = 59,743,876,213.60
  5. Step 5: Solve for x
    x = 59,743,876,213.60/281,247.03
  6. Step 6: Final answer
    x = 212,424.91

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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.