Home / 220,974.88-331,607.60-121,205

Finding the Fourth Proportional to 220,974.88, 331,607.60 and 121,205

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Solution

The fourth proportional to 220,974.88, 331,607.60 and 121,205 is: 181,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,974.88 : 331,607.60 = 121,205 : x
  2. Step 2: Convert to fraction form
    220,974.88/331,607.60 = 121,205/x
  3. Step 3: Cross multiply
    220,974.88x = 331,607.60 × 121,205
  4. Step 4: Simplify right side
    220,974.88x = 40,192,499,158
  5. Step 5: Solve for x
    x = 40,192,499,158/220,974.88
  6. Step 6: Final answer
    x = 181,887.19

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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.