Home / 209,745.40-313,926.90-162,743.80

Finding the Fourth Proportional to 209,745.40, 313,926.90 and 162,743.80

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Solution

The fourth proportional to 209,745.40, 313,926.90 and 162,743.80 is: 243,579.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,745.40 : 313,926.90 = 162,743.80 : x
  2. Step 2: Convert to fraction form
    209,745.40/313,926.90 = 162,743.80/x
  3. Step 3: Cross multiply
    209,745.40x = 313,926.90 × 162,743.80
  4. Step 4: Simplify right side
    209,745.40x = 51,089,656,628.22
  5. Step 5: Solve for x
    x = 51,089,656,628.22/209,745.40
  6. Step 6: Final answer
    x = 243,579.39

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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.