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Finding the Fourth Proportional to 512,823.80, 769,005.30 and 197,175.80

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Solution

The fourth proportional to 512,823.80, 769,005.30 and 197,175.80 is: 295,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,823.80 : 769,005.30 = 197,175.80 : x
  2. Step 2: Convert to fraction form
    512,823.80/769,005.30 = 197,175.80/x
  3. Step 3: Cross multiply
    512,823.80x = 769,005.30 × 197,175.80
  4. Step 4: Simplify right side
    512,823.80x = 151,629,235,231.74
  5. Step 5: Solve for x
    x = 151,629,235,231.74/512,823.80
  6. Step 6: Final answer
    x = 295,675.11

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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.