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Finding the Fourth Proportional to 355,907.82, 491,104.23 and 212,637.42

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Solution

The fourth proportional to 355,907.82, 491,104.23 and 212,637.42 is: 293,410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,907.82 : 491,104.23 = 212,637.42 : x
  2. Step 2: Convert to fraction form
    355,907.82/491,104.23 = 212,637.42/x
  3. Step 3: Cross multiply
    355,907.82x = 491,104.23 × 212,637.42
  4. Step 4: Simplify right side
    355,907.82x = 104,427,136,418.29
  5. Step 5: Solve for x
    x = 104,427,136,418.29/355,907.82
  6. Step 6: Final answer
    x = 293,410.63

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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.