Home / 320,388.66-441,928.04-205,485.31

Finding the Fourth Proportional to 320,388.66, 441,928.04 and 205,485.31

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Solution

The fourth proportional to 320,388.66, 441,928.04 and 205,485.31 is: 283,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,388.66 : 441,928.04 = 205,485.31 : x
  2. Step 2: Convert to fraction form
    320,388.66/441,928.04 = 205,485.31/x
  3. Step 3: Cross multiply
    320,388.66x = 441,928.04 × 205,485.31
  4. Step 4: Simplify right side
    320,388.66x = 90,809,719,705.99
  5. Step 5: Solve for x
    x = 90,809,719,705.99/320,388.66
  6. Step 6: Final answer
    x = 283,436.12

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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.