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Finding the Fourth Proportional to 285,825.60, 394,413.48 and 158,500.80

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Solution

The fourth proportional to 285,825.60, 394,413.48 and 158,500.80 is: 218,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,825.60 : 394,413.48 = 158,500.80 : x
  2. Step 2: Convert to fraction form
    285,825.60/394,413.48 = 158,500.80/x
  3. Step 3: Cross multiply
    285,825.60x = 394,413.48 × 158,500.80
  4. Step 4: Simplify right side
    285,825.60x = 62,514,852,110.78
  5. Step 5: Solve for x
    x = 62,514,852,110.78/285,825.60
  6. Step 6: Final answer
    x = 218,716.77

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1.5x scale

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.