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Finding the Fourth Proportional to 203,216.54, 280,426.79 and 111,317.54

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Solution

The fourth proportional to 203,216.54, 280,426.79 and 111,317.54 is: 153,611.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,216.54 : 280,426.79 = 111,317.54 : x
  2. Step 2: Convert to fraction form
    203,216.54/280,426.79 = 111,317.54/x
  3. Step 3: Cross multiply
    203,216.54x = 280,426.79 × 111,317.54
  4. Step 4: Simplify right side
    203,216.54x = 31,216,419,289.06
  5. Step 5: Solve for x
    x = 31,216,419,289.06/203,216.54
  6. Step 6: Final answer
    x = 153,611.61

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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.