Home / 209,442.27-311,794.41-208,196.70

Finding the Fourth Proportional to 209,442.27, 311,794.41 and 208,196.70

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Solution

The fourth proportional to 209,442.27, 311,794.41 and 208,196.70 is: 309,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,442.27 : 311,794.41 = 208,196.70 : x
  2. Step 2: Convert to fraction form
    209,442.27/311,794.41 = 208,196.70/x
  3. Step 3: Cross multiply
    209,442.27x = 311,794.41 × 208,196.70
  4. Step 4: Simplify right side
    209,442.27x = 64,914,567,240.45
  5. Step 5: Solve for x
    x = 64,914,567,240.45/209,442.27
  6. Step 6: Final answer
    x = 309,940.14

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1.5x scale

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.