Home / 212,778.54-319,178.76-55,008.36

Finding the Fourth Proportional to 212,778.54, 319,178.76 and 55,008.36

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Solution

The fourth proportional to 212,778.54, 319,178.76 and 55,008.36 is: 82,515.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,778.54 : 319,178.76 = 55,008.36 : x
  2. Step 2: Convert to fraction form
    212,778.54/319,178.76 = 55,008.36/x
  3. Step 3: Cross multiply
    212,778.54x = 319,178.76 × 55,008.36
  4. Step 4: Simplify right side
    212,778.54x = 17,557,500,134.43
  5. Step 5: Solve for x
    x = 17,557,500,134.43/212,778.54
  6. Step 6: Final answer
    x = 82,515.37

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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.