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Finding the Fourth Proportional to 203,457.79, 280,745.94 and 111,552.89

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Solution

The fourth proportional to 203,457.79, 280,745.94 and 111,552.89 is: 153,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,457.79 : 280,745.94 = 111,552.89 : x
  2. Step 2: Convert to fraction form
    203,457.79/280,745.94 = 111,552.89/x
  3. Step 3: Cross multiply
    203,457.79x = 280,745.94 × 111,552.89
  4. Step 4: Simplify right side
    203,457.79x = 31,318,019,982.60
  5. Step 5: Solve for x
    x = 31,318,019,982.60/203,457.79
  6. Step 6: Final answer
    x = 153,928.83

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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.