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Finding the Fourth Proportional to 203,546.88, 305,348.04 and 70,391.40

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Solution

The fourth proportional to 203,546.88, 305,348.04 and 70,391.40 is: 105,596.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,546.88 : 305,348.04 = 70,391.40 : x
  2. Step 2: Convert to fraction form
    203,546.88/305,348.04 = 70,391.40/x
  3. Step 3: Cross multiply
    203,546.88x = 305,348.04 × 70,391.40
  4. Step 4: Simplify right side
    203,546.88x = 21,493,876,022.86
  5. Step 5: Solve for x
    x = 21,493,876,022.86/203,546.88
  6. Step 6: Final answer
    x = 105,596.69

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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.