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Finding the Fourth Proportional to 216,629.33, 324,841.43 and 126,698.06

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Solution

The fourth proportional to 216,629.33, 324,841.43 and 126,698.06 is: 189,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,629.33 : 324,841.43 = 126,698.06 : x
  2. Step 2: Convert to fraction form
    216,629.33/324,841.43 = 126,698.06/x
  3. Step 3: Cross multiply
    216,629.33x = 324,841.43 × 126,698.06
  4. Step 4: Simplify right side
    216,629.33x = 41,156,780,117.47
  5. Step 5: Solve for x
    x = 41,156,780,117.47/216,629.33
  6. Step 6: Final answer
    x = 189,987.11

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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.