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Finding the Fourth Proportional to 418,021.72, 576,860.48 and 227,031

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Solution

The fourth proportional to 418,021.72, 576,860.48 and 227,031 is: 313,297.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,021.72 : 576,860.48 = 227,031 : x
  2. Step 2: Convert to fraction form
    418,021.72/576,860.48 = 227,031/x
  3. Step 3: Cross multiply
    418,021.72x = 576,860.48 × 227,031
  4. Step 4: Simplify right side
    418,021.72x = 130,965,211,634.88
  5. Step 5: Solve for x
    x = 130,965,211,634.88/418,021.72
  6. Step 6: Final answer
    x = 313,297.62

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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.