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Finding the Fourth Proportional to 311,399.02, 429,800.58 and 203,906.62

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Solution

The fourth proportional to 311,399.02, 429,800.58 and 203,906.62 is: 281,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,399.02 : 429,800.58 = 203,906.62 : x
  2. Step 2: Convert to fraction form
    311,399.02/429,800.58 = 203,906.62/x
  3. Step 3: Cross multiply
    311,399.02x = 429,800.58 × 203,906.62
  4. Step 4: Simplify right side
    311,399.02x = 87,639,183,541.84
  5. Step 5: Solve for x
    x = 87,639,183,541.84/311,399.02
  6. Step 6: Final answer
    x = 281,436.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.