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Finding the Fourth Proportional to 199,440.80, 299,175.60 and 66,413.60

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Solution

The fourth proportional to 199,440.80, 299,175.60 and 66,413.60 is: 99,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,440.80 : 299,175.60 = 66,413.60 : x
  2. Step 2: Convert to fraction form
    199,440.80/299,175.60 = 66,413.60/x
  3. Step 3: Cross multiply
    199,440.80x = 299,175.60 × 66,413.60
  4. Step 4: Simplify right side
    199,440.80x = 19,869,328,628.16
  5. Step 5: Solve for x
    x = 19,869,328,628.16/199,440.80
  6. Step 6: Final answer
    x = 99,625.20

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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.