Home / 213,016.80-319,136.40-173,359.20

Finding the Fourth Proportional to 213,016.80, 319,136.40 and 173,359.20

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Solution

The fourth proportional to 213,016.80, 319,136.40 and 173,359.20 is: 259,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,016.80 : 319,136.40 = 173,359.20 : x
  2. Step 2: Convert to fraction form
    213,016.80/319,136.40 = 173,359.20/x
  3. Step 3: Cross multiply
    213,016.80x = 319,136.40 × 173,359.20
  4. Step 4: Simplify right side
    213,016.80x = 55,325,230,994.88
  5. Step 5: Solve for x
    x = 55,325,230,994.88/213,016.80
  6. Step 6: Final answer
    x = 259,722.38

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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.