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Finding the Fourth Proportional to 201,064.20, 301,766.40 and 82,820.40

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Solution

The fourth proportional to 201,064.20, 301,766.40 and 82,820.40 is: 124,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,064.20 : 301,766.40 = 82,820.40 : x
  2. Step 2: Convert to fraction form
    201,064.20/301,766.40 = 82,820.40/x
  3. Step 3: Cross multiply
    201,064.20x = 301,766.40 × 82,820.40
  4. Step 4: Simplify right side
    201,064.20x = 24,992,413,954.56
  5. Step 5: Solve for x
    x = 24,992,413,954.56/201,064.20
  6. Step 6: Final answer
    x = 124,300.67

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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.