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Finding the Fourth Proportional to 281,884.80, 388,992.60 and 154,556.04

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Solution

The fourth proportional to 281,884.80, 388,992.60 and 154,556.04 is: 213,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,884.80 : 388,992.60 = 154,556.04 : x
  2. Step 2: Convert to fraction form
    281,884.80/388,992.60 = 154,556.04/x
  3. Step 3: Cross multiply
    281,884.80x = 388,992.60 × 154,556.04
  4. Step 4: Simplify right side
    281,884.80x = 60,121,155,845.30
  5. Step 5: Solve for x
    x = 60,121,155,845.30/281,884.80
  6. Step 6: Final answer
    x = 213,282.72

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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.