Home / 320,918.40-443,069.04-206,248.32

Finding the Fourth Proportional to 320,918.40, 443,069.04 and 206,248.32

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Solution

The fourth proportional to 320,918.40, 443,069.04 and 206,248.32 is: 284,752.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,918.40 : 443,069.04 = 206,248.32 : x
  2. Step 2: Convert to fraction form
    320,918.40/443,069.04 = 206,248.32/x
  3. Step 3: Cross multiply
    320,918.40x = 443,069.04 × 206,248.32
  4. Step 4: Simplify right side
    320,918.40x = 91,382,245,144.01
  5. Step 5: Solve for x
    x = 91,382,245,144.01/320,918.40
  6. Step 6: Final answer
    x = 284,752.28

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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.