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Finding the Fourth Proportional to 219,786.24, 329,679.36 and 79,512.24

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Solution

The fourth proportional to 219,786.24, 329,679.36 and 79,512.24 is: 119,268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,786.24 : 329,679.36 = 79,512.24 : x
  2. Step 2: Convert to fraction form
    219,786.24/329,679.36 = 79,512.24/x
  3. Step 3: Cross multiply
    219,786.24x = 329,679.36 × 79,512.24
  4. Step 4: Simplify right side
    219,786.24x = 26,213,544,395.37
  5. Step 5: Solve for x
    x = 26,213,544,395.37/219,786.24
  6. Step 6: Final answer
    x = 119,268.36

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1.5x scale

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.