Home / 209,109,990.80-313,664,986.20-199,704,141.20

Finding the Fourth Proportional to 209,109,990.80, 313,664,986.20 and 199,704,141.20

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Solution

The fourth proportional to 209,109,990.80, 313,664,986.20 and 199,704,141.20 is: 299,556,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,109,990.80 : 313,664,986.20 = 199,704,141.20 : x
  2. Step 2: Convert to fraction form
    209,109,990.80/313,664,986.20 = 199,704,141.20/x
  3. Step 3: Cross multiply
    209,109,990.80x = 313,664,986.20 × 199,704,141.20
  4. Step 4: Simplify right side
    209,109,990.80x = 62,640,196,693,580,848
  5. Step 5: Solve for x
    x = 62,640,196,693,580,848/209,109,990.80
  6. Step 6: Final answer
    x = 299,556,211.80

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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.