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Finding the Fourth Proportional to 281,804.34, 388,889.43 and 154,480.85

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Solution

The fourth proportional to 281,804.34, 388,889.43 and 154,480.85 is: 213,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,804.34 : 388,889.43 = 154,480.85 : x
  2. Step 2: Convert to fraction form
    281,804.34/388,889.43 = 154,480.85/x
  3. Step 3: Cross multiply
    281,804.34x = 388,889.43 × 154,480.85
  4. Step 4: Simplify right side
    281,804.34x = 60,075,969,702.42
  5. Step 5: Solve for x
    x = 60,075,969,702.42/281,804.34
  6. Step 6: Final answer
    x = 213,183.27

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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.