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Finding the Fourth Proportional to 203,915.20, 305,289.60 and 203,915.20

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Solution

The fourth proportional to 203,915.20, 305,289.60 and 203,915.20 is: 305,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,915.20 : 305,289.60 = 203,915.20 : x
  2. Step 2: Convert to fraction form
    203,915.20/305,289.60 = 203,915.20/x
  3. Step 3: Cross multiply
    203,915.20x = 305,289.60 × 203,915.20
  4. Step 4: Simplify right side
    203,915.20x = 62,253,189,841.92
  5. Step 5: Solve for x
    x = 62,253,189,841.92/203,915.20
  6. Step 6: Final answer
    x = 305,289.60

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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.