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Finding the Fourth Proportional to 321,779.36, 482,669.65 and 132,107.67

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Solution

The fourth proportional to 321,779.36, 482,669.65 and 132,107.67 is: 198,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,779.36 : 482,669.65 = 132,107.67 : x
  2. Step 2: Convert to fraction form
    321,779.36/482,669.65 = 132,107.67/x
  3. Step 3: Cross multiply
    321,779.36x = 482,669.65 × 132,107.67
  4. Step 4: Simplify right side
    321,779.36x = 63,764,362,841.22
  5. Step 5: Solve for x
    x = 63,764,362,841.22/321,779.36
  6. Step 6: Final answer
    x = 198,161.76

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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.