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Finding the Fourth Proportional to 219,347.21, 329,020.82 and 79,105.83

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Solution

The fourth proportional to 219,347.21, 329,020.82 and 79,105.83 is: 118,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,347.21 : 329,020.82 = 79,105.83 : x
  2. Step 2: Convert to fraction form
    219,347.21/329,020.82 = 79,105.83/x
  3. Step 3: Cross multiply
    219,347.21x = 329,020.82 × 79,105.83
  4. Step 4: Simplify right side
    219,347.21x = 26,027,464,657.85
  5. Step 5: Solve for x
    x = 26,027,464,657.85/219,347.21
  6. Step 6: Final answer
    x = 118,658.75

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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.