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Finding the Fourth Proportional to 303,485.54, 455,177.21 and 111,320.33

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Solution

The fourth proportional to 303,485.54, 455,177.21 and 111,320.33 is: 166,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,485.54 : 455,177.21 = 111,320.33 : x
  2. Step 2: Convert to fraction form
    303,485.54/455,177.21 = 111,320.33/x
  3. Step 3: Cross multiply
    303,485.54x = 455,177.21 × 111,320.33
  4. Step 4: Simplify right side
    303,485.54x = 50,670,474,393.19
  5. Step 5: Solve for x
    x = 50,670,474,393.19/303,485.54
  6. Step 6: Final answer
    x = 166,961.74

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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.