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Finding the Fourth Proportional to 394,178.95, 543,967.46 and 224,413.07

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Solution

The fourth proportional to 394,178.95, 543,967.46 and 224,413.07 is: 309,690.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,178.95 : 543,967.46 = 224,413.07 : x
  2. Step 2: Convert to fraction form
    394,178.95/543,967.46 = 224,413.07/x
  3. Step 3: Cross multiply
    394,178.95x = 543,967.46 × 224,413.07
  4. Step 4: Simplify right side
    394,178.95x = 122,073,407,678.70
  5. Step 5: Solve for x
    x = 122,073,407,678.70/394,178.95
  6. Step 6: Final answer
    x = 309,690.33

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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.