Home / 205,986.75-308,616.73-180,400.77

Finding the Fourth Proportional to 205,986.75, 308,616.73 and 180,400.77

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Solution

The fourth proportional to 205,986.75, 308,616.73 and 180,400.77 is: 270,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,986.75 : 308,616.73 = 180,400.77 : x
  2. Step 2: Convert to fraction form
    205,986.75/308,616.73 = 180,400.77/x
  3. Step 3: Cross multiply
    205,986.75x = 308,616.73 × 180,400.77
  4. Step 4: Simplify right side
    205,986.75x = 55,674,693,732.80
  5. Step 5: Solve for x
    x = 55,674,693,732.80/205,986.75
  6. Step 6: Final answer
    x = 270,282.89

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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.