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Finding the Fourth Proportional to 281,806.24, 388,891.92 and 154,482.40

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Solution

The fourth proportional to 281,806.24, 388,891.92 and 154,482.40 is: 213,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,806.24 : 388,891.92 = 154,482.40 : x
  2. Step 2: Convert to fraction form
    281,806.24/388,891.92 = 154,482.40/x
  3. Step 3: Cross multiply
    281,806.24x = 388,891.92 × 154,482.40
  4. Step 4: Simplify right side
    281,806.24x = 60,076,957,142.21
  5. Step 5: Solve for x
    x = 60,076,957,142.21/281,806.24
  6. Step 6: Final answer
    x = 213,185.33

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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.