Home / 209,438.52-311,788.82-208,192.95

Finding the Fourth Proportional to 209,438.52, 311,788.82 and 208,192.95

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Solution

The fourth proportional to 209,438.52, 311,788.82 and 208,192.95 is: 309,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,438.52 : 311,788.82 = 208,192.95 : x
  2. Step 2: Convert to fraction form
    209,438.52/311,788.82 = 208,192.95/x
  3. Step 3: Cross multiply
    209,438.52x = 311,788.82 × 208,192.95
  4. Step 4: Simplify right side
    209,438.52x = 64,912,234,212.82
  5. Step 5: Solve for x
    x = 64,912,234,212.82/209,438.52
  6. Step 6: Final answer
    x = 309,934.55

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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.