Home / 275,343.12-379,939.68-162,144

Finding the Fourth Proportional to 275,343.12, 379,939.68 and 162,144

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Solution

The fourth proportional to 275,343.12, 379,939.68 and 162,144 is: 223,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,343.12 : 379,939.68 = 162,144 : x
  2. Step 2: Convert to fraction form
    275,343.12/379,939.68 = 162,144/x
  3. Step 3: Cross multiply
    275,343.12x = 379,939.68 × 162,144
  4. Step 4: Simplify right side
    275,343.12x = 61,604,939,473.92
  5. Step 5: Solve for x
    x = 61,604,939,473.92/275,343.12
  6. Step 6: Final answer
    x = 223,738.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.