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Finding the Fourth Proportional to 217,103.04, 325,765.80 and 103,379.64

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Solution

The fourth proportional to 217,103.04, 325,765.80 and 103,379.64 is: 155,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,103.04 : 325,765.80 = 103,379.64 : x
  2. Step 2: Convert to fraction form
    217,103.04/325,765.80 = 103,379.64/x
  3. Step 3: Cross multiply
    217,103.04x = 325,765.80 × 103,379.64
  4. Step 4: Simplify right side
    217,103.04x = 33,677,551,128.31
  5. Step 5: Solve for x
    x = 33,677,551,128.31/217,103.04
  6. Step 6: Final answer
    x = 155,122.43

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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.