Home / 209,419.41-311,760.54-208,173.86

Finding the Fourth Proportional to 209,419.41, 311,760.54 and 208,173.86

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Solution

The fourth proportional to 209,419.41, 311,760.54 and 208,173.86 is: 309,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,419.41 : 311,760.54 = 208,173.86 : x
  2. Step 2: Convert to fraction form
    209,419.41/311,760.54 = 208,173.86/x
  3. Step 3: Cross multiply
    209,419.41x = 311,760.54 × 208,173.86
  4. Step 4: Simplify right side
    209,419.41x = 64,900,394,617.78
  5. Step 5: Solve for x
    x = 64,900,394,617.78/209,419.41
  6. Step 6: Final answer
    x = 309,906.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.