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Finding the Fourth Proportional to 219,422.72, 329,145.49 and 69,674.75

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Solution

The fourth proportional to 219,422.72, 329,145.49 and 69,674.75 is: 104,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,422.72 : 329,145.49 = 69,674.75 : x
  2. Step 2: Convert to fraction form
    219,422.72/329,145.49 = 69,674.75/x
  3. Step 3: Cross multiply
    219,422.72x = 329,145.49 × 69,674.75
  4. Step 4: Simplify right side
    219,422.72x = 22,933,129,405.04
  5. Step 5: Solve for x
    x = 22,933,129,405.04/219,422.72
  6. Step 6: Final answer
    x = 104,515.75

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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.