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Finding the Fourth Proportional to 203,469.02, 280,790.61 and 112,828.82

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Solution

The fourth proportional to 203,469.02, 280,790.61 and 112,828.82 is: 155,705.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,469.02 : 280,790.61 = 112,828.82 : x
  2. Step 2: Convert to fraction form
    203,469.02/280,790.61 = 112,828.82/x
  3. Step 3: Cross multiply
    203,469.02x = 280,790.61 × 112,828.82
  4. Step 4: Simplify right side
    203,469.02x = 31,681,273,193.38
  5. Step 5: Solve for x
    x = 31,681,273,193.38/203,469.02
  6. Step 6: Final answer
    x = 155,705.64

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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.