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Finding the Fourth Proportional to 281,283.45, 388,226.49 and 213,181.64

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Solution

The fourth proportional to 281,283.45, 388,226.49 and 213,181.64 is: 294,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,283.45 : 388,226.49 = 213,181.64 : x
  2. Step 2: Convert to fraction form
    281,283.45/388,226.49 = 213,181.64/x
  3. Step 3: Cross multiply
    281,283.45x = 388,226.49 × 213,181.64
  4. Step 4: Simplify right side
    281,283.45x = 82,762,760,343.65
  5. Step 5: Solve for x
    x = 82,762,760,343.65/281,283.45
  6. Step 6: Final answer
    x = 294,232.60

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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.