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Finding the Fourth Proportional to 200,909.75, 277,255.50 and 111,485.75

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Solution

The fourth proportional to 200,909.75, 277,255.50 and 111,485.75 is: 153,850.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,909.75 : 277,255.50 = 111,485.75 : x
  2. Step 2: Convert to fraction form
    200,909.75/277,255.50 = 111,485.75/x
  3. Step 3: Cross multiply
    200,909.75x = 277,255.50 × 111,485.75
  4. Step 4: Simplify right side
    200,909.75x = 30,910,037,359.13
  5. Step 5: Solve for x
    x = 30,910,037,359.13/200,909.75
  6. Step 6: Final answer
    x = 153,850.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.