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Finding the Fourth Proportional to 281,791.78, 388,877.39 and 152,734.34

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Solution

The fourth proportional to 281,791.78, 388,877.39 and 152,734.34 is: 210,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,791.78 : 388,877.39 = 152,734.34 : x
  2. Step 2: Convert to fraction form
    281,791.78/388,877.39 = 152,734.34/x
  3. Step 3: Cross multiply
    281,791.78x = 388,877.39 × 152,734.34
  4. Step 4: Simplify right side
    281,791.78x = 59,394,932,283.85
  5. Step 5: Solve for x
    x = 59,394,932,283.85/281,791.78
  6. Step 6: Final answer
    x = 210,775.96

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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.