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Finding the Fourth Proportional to 216,013.20, 324,408.60 and 156,915.60

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Solution

The fourth proportional to 216,013.20, 324,408.60 and 156,915.60 is: 235,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,013.20 : 324,408.60 = 156,915.60 : x
  2. Step 2: Convert to fraction form
    216,013.20/324,408.60 = 156,915.60/x
  3. Step 3: Cross multiply
    216,013.20x = 324,408.60 × 156,915.60
  4. Step 4: Simplify right side
    216,013.20x = 50,904,770,114.16
  5. Step 5: Solve for x
    x = 50,904,770,114.16/216,013.20
  6. Step 6: Final answer
    x = 235,655.83

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1.5x scale

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.