Home / 320,662.36-442,321.29-211,767.70

Finding the Fourth Proportional to 320,662.36, 442,321.29 and 211,767.70

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Solution

The fourth proportional to 320,662.36, 442,321.29 and 211,767.70 is: 292,112.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,662.36 : 442,321.29 = 211,767.70 : x
  2. Step 2: Convert to fraction form
    320,662.36/442,321.29 = 211,767.70/x
  3. Step 3: Cross multiply
    320,662.36x = 442,321.29 × 211,767.70
  4. Step 4: Simplify right side
    320,662.36x = 93,669,362,244.33
  5. Step 5: Solve for x
    x = 93,669,362,244.33/320,662.36
  6. Step 6: Final answer
    x = 292,112.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.