Home / 205,718.24-308,374.94-120,220.58

Finding the Fourth Proportional to 205,718.24, 308,374.94 and 120,220.58

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Solution

The fourth proportional to 205,718.24, 308,374.94 and 120,220.58 is: 180,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,718.24 : 308,374.94 = 120,220.58 : x
  2. Step 2: Convert to fraction form
    205,718.24/308,374.94 = 120,220.58/x
  3. Step 3: Cross multiply
    205,718.24x = 308,374.94 × 120,220.58
  4. Step 4: Simplify right side
    205,718.24x = 37,073,014,144.27
  5. Step 5: Solve for x
    x = 37,073,014,144.27/205,718.24
  6. Step 6: Final answer
    x = 180,212.58

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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.