Home / 266,922,413.40-400,383,620.10-209,591,520.60

Finding the Fourth Proportional to 266,922,413.40, 400,383,620.10 and 209,591,520.60

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Solution

The fourth proportional to 266,922,413.40, 400,383,620.10 and 209,591,520.60 is: 314,387,280.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,922,413.40 : 400,383,620.10 = 209,591,520.60 : x
  2. Step 2: Convert to fraction form
    266,922,413.40/400,383,620.10 = 209,591,520.60/x
  3. Step 3: Cross multiply
    266,922,413.40x = 400,383,620.10 × 209,591,520.60
  4. Step 4: Simplify right side
    266,922,413.40x = 83,917,011,760,091,728
  5. Step 5: Solve for x
    x = 83,917,011,760,091,728/266,922,413.40
  6. Step 6: Final answer
    x = 314,387,280.90

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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.