Home / 212,845.80-319,268.70-188,884.20

Finding the Fourth Proportional to 212,845.80, 319,268.70 and 188,884.20

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Solution

The fourth proportional to 212,845.80, 319,268.70 and 188,884.20 is: 283,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,845.80 : 319,268.70 = 188,884.20 : x
  2. Step 2: Convert to fraction form
    212,845.80/319,268.70 = 188,884.20/x
  3. Step 3: Cross multiply
    212,845.80x = 319,268.70 × 188,884.20
  4. Step 4: Simplify right side
    212,845.80x = 60,304,812,984.54
  5. Step 5: Solve for x
    x = 60,304,812,984.54/212,845.80
  6. Step 6: Final answer
    x = 283,326.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.