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Finding the Fourth Proportional to 204,307.80, 306,072.90 and 121,104.60

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Solution

The fourth proportional to 204,307.80, 306,072.90 and 121,104.60 is: 181,426.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,307.80 : 306,072.90 = 121,104.60 : x
  2. Step 2: Convert to fraction form
    204,307.80/306,072.90 = 121,104.60/x
  3. Step 3: Cross multiply
    204,307.80x = 306,072.90 × 121,104.60
  4. Step 4: Simplify right side
    204,307.80x = 37,066,836,125.34
  5. Step 5: Solve for x
    x = 37,066,836,125.34/204,307.80
  6. Step 6: Final answer
    x = 181,426.44

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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.