Home / 209,438.28-311,788.44-208,192.68

Finding the Fourth Proportional to 209,438.28, 311,788.44 and 208,192.68

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Solution

The fourth proportional to 209,438.28, 311,788.44 and 208,192.68 is: 309,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,438.28 : 311,788.44 = 208,192.68 : x
  2. Step 2: Convert to fraction form
    209,438.28/311,788.44 = 208,192.68/x
  3. Step 3: Cross multiply
    209,438.28x = 311,788.44 × 208,192.68
  4. Step 4: Simplify right side
    209,438.28x = 64,912,070,916.62
  5. Step 5: Solve for x
    x = 64,912,070,916.62/209,438.28
  6. Step 6: Final answer
    x = 309,934.13

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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.