Home / 212,787.36-318,239.84-189,260

Finding the Fourth Proportional to 212,787.36, 318,239.84 and 189,260

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Solution

The fourth proportional to 212,787.36, 318,239.84 and 189,260 is: 283,052.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,787.36 : 318,239.84 = 189,260 : x
  2. Step 2: Convert to fraction form
    212,787.36/318,239.84 = 189,260/x
  3. Step 3: Cross multiply
    212,787.36x = 318,239.84 × 189,260
  4. Step 4: Simplify right side
    212,787.36x = 60,230,072,118.40
  5. Step 5: Solve for x
    x = 60,230,072,118.40/212,787.36
  6. Step 6: Final answer
    x = 283,052.87

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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.