Home / 205,815.50-308,545.80-79,544.33

Finding the Fourth Proportional to 205,815.50, 308,545.80 and 79,544.33

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Solution

The fourth proportional to 205,815.50, 308,545.80 and 79,544.33 is: 119,247.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,815.50 : 308,545.80 = 79,544.33 : x
  2. Step 2: Convert to fraction form
    205,815.50/308,545.80 = 79,544.33/x
  3. Step 3: Cross multiply
    205,815.50x = 308,545.80 × 79,544.33
  4. Step 4: Simplify right side
    205,815.50x = 24,543,067,392.59
  5. Step 5: Solve for x
    x = 24,543,067,392.59/205,815.50
  6. Step 6: Final answer
    x = 119,247.91

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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.