Home / 283,243.21-390,883.82-154,190.05

Finding the Fourth Proportional to 283,243.21, 390,883.82 and 154,190.05

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Solution

The fourth proportional to 283,243.21, 390,883.82 and 154,190.05 is: 212,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,243.21 : 390,883.82 = 154,190.05 : x
  2. Step 2: Convert to fraction form
    283,243.21/390,883.82 = 154,190.05/x
  3. Step 3: Cross multiply
    283,243.21x = 390,883.82 × 154,190.05
  4. Step 4: Simplify right side
    283,243.21x = 60,270,395,749.99
  5. Step 5: Solve for x
    x = 60,270,395,749.99/283,243.21
  6. Step 6: Final answer
    x = 212,786.73

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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.