Home / 212,824.84-319,021.80-137,992.36

Finding the Fourth Proportional to 212,824.84, 319,021.80 and 137,992.36

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Solution

The fourth proportional to 212,824.84, 319,021.80 and 137,992.36 is: 206,848.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,824.84 : 319,021.80 = 137,992.36 : x
  2. Step 2: Convert to fraction form
    212,824.84/319,021.80 = 137,992.36/x
  3. Step 3: Cross multiply
    212,824.84x = 319,021.80 × 137,992.36
  4. Step 4: Simplify right side
    212,824.84x = 44,022,571,073.45
  5. Step 5: Solve for x
    x = 44,022,571,073.45/212,824.84
  6. Step 6: Final answer
    x = 206,848.84

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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.