Home / 212,984.48-319,383.44-79,771.28

Finding the Fourth Proportional to 212,984.48, 319,383.44 and 79,771.28

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Solution

The fourth proportional to 212,984.48, 319,383.44 and 79,771.28 is: 119,621.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,984.48 : 319,383.44 = 79,771.28 : x
  2. Step 2: Convert to fraction form
    212,984.48/319,383.44 = 79,771.28/x
  3. Step 3: Cross multiply
    212,984.48x = 319,383.44 × 79,771.28
  4. Step 4: Simplify right side
    212,984.48x = 25,477,625,819.60
  5. Step 5: Solve for x
    x = 25,477,625,819.60/212,984.48
  6. Step 6: Final answer
    x = 119,621.98

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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.