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Finding the Fourth Proportional to 612,029.44, 917,668.28 and 212,498.56

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Solution

The fourth proportional to 612,029.44, 917,668.28 and 212,498.56 is: 318,617.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,029.44 : 917,668.28 = 212,498.56 : x
  2. Step 2: Convert to fraction form
    612,029.44/917,668.28 = 212,498.56/x
  3. Step 3: Cross multiply
    612,029.44x = 917,668.28 × 212,498.56
  4. Step 4: Simplify right side
    612,029.44x = 195,003,188,057.68
  5. Step 5: Solve for x
    x = 195,003,188,057.68/612,029.44
  6. Step 6: Final answer
    x = 318,617.33

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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.