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Finding the Fourth Proportional to 200,009.40, 299,625.30 and 111,103.80

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Solution

The fourth proportional to 200,009.40, 299,625.30 and 111,103.80 is: 166,439.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,009.40 : 299,625.30 = 111,103.80 : x
  2. Step 2: Convert to fraction form
    200,009.40/299,625.30 = 111,103.80/x
  3. Step 3: Cross multiply
    200,009.40x = 299,625.30 × 111,103.80
  4. Step 4: Simplify right side
    200,009.40x = 33,289,509,406.14
  5. Step 5: Solve for x
    x = 33,289,509,406.14/200,009.40
  6. Step 6: Final answer
    x = 166,439.72

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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.