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Finding the Fourth Proportional to 394,413.60, 591,882.45 and 145,095.60

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Solution

The fourth proportional to 394,413.60, 591,882.45 and 145,095.60 is: 217,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,413.60 : 591,882.45 = 145,095.60 : x
  2. Step 2: Convert to fraction form
    394,413.60/591,882.45 = 145,095.60/x
  3. Step 3: Cross multiply
    394,413.60x = 591,882.45 × 145,095.60
  4. Step 4: Simplify right side
    394,413.60x = 85,879,539,212.22
  5. Step 5: Solve for x
    x = 85,879,539,212.22/394,413.60
  6. Step 6: Final answer
    x = 217,739.80

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1.5x scale

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.