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Finding the Fourth Proportional to 203,915.60, 305,873.40 and 156,621.73

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Solution

The fourth proportional to 203,915.60, 305,873.40 and 156,621.73 is: 234,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,915.60 : 305,873.40 = 156,621.73 : x
  2. Step 2: Convert to fraction form
    203,915.60/305,873.40 = 156,621.73/x
  3. Step 3: Cross multiply
    203,915.60x = 305,873.40 × 156,621.73
  4. Step 4: Simplify right side
    203,915.60x = 47,906,421,068.98
  5. Step 5: Solve for x
    x = 47,906,421,068.98/203,915.60
  6. Step 6: Final answer
    x = 234,932.60

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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.