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Finding the Fourth Proportional to 203,762.37, 305,245.94 and 133,428.45

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Solution

The fourth proportional to 203,762.37, 305,245.94 and 133,428.45 is: 199,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,762.37 : 305,245.94 = 133,428.45 : x
  2. Step 2: Convert to fraction form
    203,762.37/305,245.94 = 133,428.45/x
  3. Step 3: Cross multiply
    203,762.37x = 305,245.94 × 133,428.45
  4. Step 4: Simplify right side
    203,762.37x = 40,728,490,920.28
  5. Step 5: Solve for x
    x = 40,728,490,920.28/203,762.37
  6. Step 6: Final answer
    x = 199,882.30

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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.