Home / 287,865.14-397,325.12-196,136.15

Finding the Fourth Proportional to 287,865.14, 397,325.12 and 196,136.15

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Solution

The fourth proportional to 287,865.14, 397,325.12 and 196,136.15 is: 270,716.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,865.14 : 397,325.12 = 196,136.15 : x
  2. Step 2: Convert to fraction form
    287,865.14/397,325.12 = 196,136.15/x
  3. Step 3: Cross multiply
    287,865.14x = 397,325.12 × 196,136.15
  4. Step 4: Simplify right side
    287,865.14x = 77,929,816,367.78
  5. Step 5: Solve for x
    x = 77,929,816,367.78/287,865.14
  6. Step 6: Final answer
    x = 270,716.41

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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.