Home / 205,583.04-308,296.80-80,856

Finding the Fourth Proportional to 205,583.04, 308,296.80 and 80,856

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Solution

The fourth proportional to 205,583.04, 308,296.80 and 80,856 is: 121,253.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,583.04 : 308,296.80 = 80,856 : x
  2. Step 2: Convert to fraction form
    205,583.04/308,296.80 = 80,856/x
  3. Step 3: Cross multiply
    205,583.04x = 308,296.80 × 80,856
  4. Step 4: Simplify right side
    205,583.04x = 24,927,646,060.80
  5. Step 5: Solve for x
    x = 24,927,646,060.80/205,583.04
  6. Step 6: Final answer
    x = 121,253.42

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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.