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Finding the Fourth Proportional to 216,631.26, 325,106.52 and 102,779.49

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Solution

The fourth proportional to 216,631.26, 325,106.52 and 102,779.49 is: 154,244.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,631.26 : 325,106.52 = 102,779.49 : x
  2. Step 2: Convert to fraction form
    216,631.26/325,106.52 = 102,779.49/x
  3. Step 3: Cross multiply
    216,631.26x = 325,106.52 × 102,779.49
  4. Step 4: Simplify right side
    216,631.26x = 33,414,282,321.27
  5. Step 5: Solve for x
    x = 33,414,282,321.27/216,631.26
  6. Step 6: Final answer
    x = 154,244.97

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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.