Home / 213,457.58-320,186.37-80,367.69

Finding the Fourth Proportional to 213,457.58, 320,186.37 and 80,367.69

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Solution

The fourth proportional to 213,457.58, 320,186.37 and 80,367.69 is: 120,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,457.58 : 320,186.37 = 80,367.69 : x
  2. Step 2: Convert to fraction form
    213,457.58/320,186.37 = 80,367.69/x
  3. Step 3: Cross multiply
    213,457.58x = 320,186.37 × 80,367.69
  4. Step 4: Simplify right side
    213,457.58x = 25,732,638,926.39
  5. Step 5: Solve for x
    x = 25,732,638,926.39/213,457.58
  6. Step 6: Final answer
    x = 120,551.54

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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.