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Finding the Fourth Proportional to 199,556.45, 299,175.72 and 115,220.94

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Solution

The fourth proportional to 199,556.45, 299,175.72 and 115,220.94 is: 172,739.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,556.45 : 299,175.72 = 115,220.94 : x
  2. Step 2: Convert to fraction form
    199,556.45/299,175.72 = 115,220.94/x
  3. Step 3: Cross multiply
    199,556.45x = 299,175.72 × 115,220.94
  4. Step 4: Simplify right side
    199,556.45x = 34,471,307,683.58
  5. Step 5: Solve for x
    x = 34,471,307,683.58/199,556.45
  6. Step 6: Final answer
    x = 172,739.64

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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.