Home / 212,823.20-319,072.80-107,717.60

Finding the Fourth Proportional to 212,823.20, 319,072.80 and 107,717.60

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Solution

The fourth proportional to 212,823.20, 319,072.80 and 107,717.60 is: 161,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,823.20 : 319,072.80 = 107,717.60 : x
  2. Step 2: Convert to fraction form
    212,823.20/319,072.80 = 107,717.60/x
  3. Step 3: Cross multiply
    212,823.20x = 319,072.80 × 107,717.60
  4. Step 4: Simplify right side
    212,823.20x = 34,369,756,241.28
  5. Step 5: Solve for x
    x = 34,369,756,241.28/212,823.20
  6. Step 6: Final answer
    x = 161,494.41

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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.