Home / 211,796.40-317,176.20-100,858.80

Finding the Fourth Proportional to 211,796.40, 317,176.20 and 100,858.80

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Solution

The fourth proportional to 211,796.40, 317,176.20 and 100,858.80 is: 151,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,796.40 : 317,176.20 = 100,858.80 : x
  2. Step 2: Convert to fraction form
    211,796.40/317,176.20 = 100,858.80/x
  3. Step 3: Cross multiply
    211,796.40x = 317,176.20 × 100,858.80
  4. Step 4: Simplify right side
    211,796.40x = 31,990,010,920.56
  5. Step 5: Solve for x
    x = 31,990,010,920.56/211,796.40
  6. Step 6: Final answer
    x = 151,041.33

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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.