Home / 212,414.40-318,611.07-79,284.42

Finding the Fourth Proportional to 212,414.40, 318,611.07 and 79,284.42

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Solution

The fourth proportional to 212,414.40, 318,611.07 and 79,284.42 is: 118,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,414.40 : 318,611.07 = 79,284.42 : x
  2. Step 2: Convert to fraction form
    212,414.40/318,611.07 = 79,284.42/x
  3. Step 3: Cross multiply
    212,414.40x = 318,611.07 × 79,284.42
  4. Step 4: Simplify right side
    212,414.40x = 25,260,893,890.53
  5. Step 5: Solve for x
    x = 25,260,893,890.53/212,414.40
  6. Step 6: Final answer
    x = 118,922.70

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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.