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Finding the Fourth Proportional to 213,651.58, 294,806.43 and 122,990.03

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Solution

The fourth proportional to 213,651.58, 294,806.43 and 122,990.03 is: 169,707.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,651.58 : 294,806.43 = 122,990.03 : x
  2. Step 2: Convert to fraction form
    213,651.58/294,806.43 = 122,990.03/x
  3. Step 3: Cross multiply
    213,651.58x = 294,806.43 × 122,990.03
  4. Step 4: Simplify right side
    213,651.58x = 36,258,251,669.89
  5. Step 5: Solve for x
    x = 36,258,251,669.89/213,651.58
  6. Step 6: Final answer
    x = 169,707.39

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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.