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Finding the Fourth Proportional to 321,790.23, 482,763.39 and 97,137.25

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Solution

The fourth proportional to 321,790.23, 482,763.39 and 97,137.25 is: 145,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,790.23 : 482,763.39 = 97,137.25 : x
  2. Step 2: Convert to fraction form
    321,790.23/482,763.39 = 97,137.25/x
  3. Step 3: Cross multiply
    321,790.23x = 482,763.39 × 97,137.25
  4. Step 4: Simplify right side
    321,790.23x = 46,894,305,205.77
  5. Step 5: Solve for x
    x = 46,894,305,205.77/321,790.23
  6. Step 6: Final answer
    x = 145,729.43

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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.