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Finding the Fourth Proportional to 203,342.08, 305,015.19 and 53,603.86

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Solution

The fourth proportional to 203,342.08, 305,015.19 and 53,603.86 is: 80,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,342.08 : 305,015.19 = 53,603.86 : x
  2. Step 2: Convert to fraction form
    203,342.08/305,015.19 = 53,603.86/x
  3. Step 3: Cross multiply
    203,342.08x = 305,015.19 × 53,603.86
  4. Step 4: Simplify right side
    203,342.08x = 16,349,991,542.63
  5. Step 5: Solve for x
    x = 16,349,991,542.63/203,342.08
  6. Step 6: Final answer
    x = 80,406.34

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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.