Home / 858,110.70-1,287,166.05-218,413.20

Finding the Fourth Proportional to 858,110.70, 1,287,166.05 and 218,413.20

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Solution

The fourth proportional to 858,110.70, 1,287,166.05 and 218,413.20 is: 327,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,110.70 : 1,287,166.05 = 218,413.20 : x
  2. Step 2: Convert to fraction form
    858,110.70/1,287,166.05 = 218,413.20/x
  3. Step 3: Cross multiply
    858,110.70x = 1,287,166.05 × 218,413.20
  4. Step 4: Simplify right side
    858,110.70x = 281,134,055,911.86
  5. Step 5: Solve for x
    x = 281,134,055,911.86/858,110.70
  6. Step 6: Final answer
    x = 327,619.80

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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.