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Finding the Fourth Proportional to 408,519.34, 612,813.31 and 124,212.36

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Solution

The fourth proportional to 408,519.34, 612,813.31 and 124,212.36 is: 186,328.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,519.34 : 612,813.31 = 124,212.36 : x
  2. Step 2: Convert to fraction form
    408,519.34/612,813.31 = 124,212.36/x
  3. Step 3: Cross multiply
    408,519.34x = 612,813.31 × 124,212.36
  4. Step 4: Simplify right side
    408,519.34x = 76,118,987,629.78
  5. Step 5: Solve for x
    x = 76,118,987,629.78/408,519.34
  6. Step 6: Final answer
    x = 186,328.97

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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.