Home / 212,814.54-318,280.59-189,287.28

Finding the Fourth Proportional to 212,814.54, 318,280.59 and 189,287.28

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Solution

The fourth proportional to 212,814.54, 318,280.59 and 189,287.28 is: 283,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,814.54 : 318,280.59 = 189,287.28 : x
  2. Step 2: Convert to fraction form
    212,814.54/318,280.59 = 189,287.28/x
  3. Step 3: Cross multiply
    212,814.54x = 318,280.59 × 189,287.28
  4. Step 4: Simplify right side
    212,814.54x = 60,246,467,157.90
  5. Step 5: Solve for x
    x = 60,246,467,157.90/212,814.54
  6. Step 6: Final answer
    x = 283,093.75

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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.