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Finding the Fourth Proportional to 203,238.99, 280,018.17 and 134,205.86

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Solution

The fourth proportional to 203,238.99, 280,018.17 and 134,205.86 is: 184,905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,238.99 : 280,018.17 = 134,205.86 : x
  2. Step 2: Convert to fraction form
    203,238.99/280,018.17 = 134,205.86/x
  3. Step 3: Cross multiply
    203,238.99x = 280,018.17 × 134,205.86
  4. Step 4: Simplify right side
    203,238.99x = 37,580,080,020.52
  5. Step 5: Solve for x
    x = 37,580,080,020.52/203,238.99
  6. Step 6: Final answer
    x = 184,905.86

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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.