Home / 213,290.44-319,902.78-71,138.20

Finding the Fourth Proportional to 213,290.44, 319,902.78 and 71,138.20

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Solution

The fourth proportional to 213,290.44, 319,902.78 and 71,138.20 is: 106,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,290.44 : 319,902.78 = 71,138.20 : x
  2. Step 2: Convert to fraction form
    213,290.44/319,902.78 = 71,138.20/x
  3. Step 3: Cross multiply
    213,290.44x = 319,902.78 × 71,138.20
  4. Step 4: Simplify right side
    213,290.44x = 22,757,307,944.20
  5. Step 5: Solve for x
    x = 22,757,307,944.20/213,290.44
  6. Step 6: Final answer
    x = 106,696.33

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1.5x scale

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.