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Finding the Fourth Proportional to 281,987.25, 389,235.47 and 252,093.70

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Solution

The fourth proportional to 281,987.25, 389,235.47 and 252,093.70 is: 347,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,987.25 : 389,235.47 = 252,093.70 : x
  2. Step 2: Convert to fraction form
    281,987.25/389,235.47 = 252,093.70/x
  3. Step 3: Cross multiply
    281,987.25x = 389,235.47 × 252,093.70
  4. Step 4: Simplify right side
    281,987.25x = 98,123,809,803.54
  5. Step 5: Solve for x
    x = 98,123,809,803.54/281,987.25
  6. Step 6: Final answer
    x = 347,972.51

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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.