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Finding the Fourth Proportional to 545,382.72, 818,447.75 and 190,396.73

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Solution

The fourth proportional to 545,382.72, 818,447.75 and 190,396.73 is: 285,725.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,382.72 : 818,447.75 = 190,396.73 : x
  2. Step 2: Convert to fraction form
    545,382.72/818,447.75 = 190,396.73/x
  3. Step 3: Cross multiply
    545,382.72x = 818,447.75 × 190,396.73
  4. Step 4: Simplify right side
    545,382.72x = 155,829,770,231.64
  5. Step 5: Solve for x
    x = 155,829,770,231.64/545,382.72
  6. Step 6: Final answer
    x = 285,725.54

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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.