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Finding the Fourth Proportional to 298,128.60, 411,413.40 and 162,159.60

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Solution

The fourth proportional to 298,128.60, 411,413.40 and 162,159.60 is: 223,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,128.60 : 411,413.40 = 162,159.60 : x
  2. Step 2: Convert to fraction form
    298,128.60/411,413.40 = 162,159.60/x
  3. Step 3: Cross multiply
    298,128.60x = 411,413.40 × 162,159.60
  4. Step 4: Simplify right side
    298,128.60x = 66,714,632,378.64
  5. Step 5: Solve for x
    x = 66,714,632,378.64/298,128.60
  6. Step 6: Final answer
    x = 223,778.04

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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.