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Finding the Fourth Proportional to 216,631.64, 325,107.08 and 102,779.87

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Solution

The fourth proportional to 216,631.64, 325,107.08 and 102,779.87 is: 154,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,631.64 : 325,107.08 = 102,779.87 : x
  2. Step 2: Convert to fraction form
    216,631.64/325,107.08 = 102,779.87/x
  3. Step 3: Cross multiply
    216,631.64x = 325,107.08 × 102,779.87
  4. Step 4: Simplify right side
    216,631.64x = 33,414,462,049.89
  5. Step 5: Solve for x
    x = 33,414,462,049.89/216,631.64
  6. Step 6: Final answer
    x = 154,245.53

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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.