Home / 219,855.45-329,561.13-105,835.80

Finding the Fourth Proportional to 219,855.45, 329,561.13 and 105,835.80

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Solution

The fourth proportional to 219,855.45, 329,561.13 and 105,835.80 is: 158,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,855.45 : 329,561.13 = 105,835.80 : x
  2. Step 2: Convert to fraction form
    219,855.45/329,561.13 = 105,835.80/x
  3. Step 3: Cross multiply
    219,855.45x = 329,561.13 × 105,835.80
  4. Step 4: Simplify right side
    219,855.45x = 34,879,365,842.45
  5. Step 5: Solve for x
    x = 34,879,365,842.45/219,855.45
  6. Step 6: Final answer
    x = 158,646.81

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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.