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Finding the Fourth Proportional to 281,573.52, 388,474.08 and 213,519.60

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Solution

The fourth proportional to 281,573.52, 388,474.08 and 213,519.60 is: 294,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,573.52 : 388,474.08 = 213,519.60 : x
  2. Step 2: Convert to fraction form
    281,573.52/388,474.08 = 213,519.60/x
  3. Step 3: Cross multiply
    281,573.52x = 388,474.08 × 213,519.60
  4. Step 4: Simplify right side
    281,573.52x = 82,946,830,171.97
  5. Step 5: Solve for x
    x = 82,946,830,171.97/281,573.52
  6. Step 6: Final answer
    x = 294,583.21

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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.