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Finding the Fourth Proportional to 379,290.26, 523,436.42 and 218,145.42

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Solution

The fourth proportional to 379,290.26, 523,436.42 and 218,145.42 is: 301,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,290.26 : 523,436.42 = 218,145.42 : x
  2. Step 2: Convert to fraction form
    379,290.26/523,436.42 = 218,145.42/x
  3. Step 3: Cross multiply
    379,290.26x = 523,436.42 × 218,145.42
  4. Step 4: Simplify right side
    379,290.26x = 114,185,257,684.20
  5. Step 5: Solve for x
    x = 114,185,257,684.20/379,290.26
  6. Step 6: Final answer
    x = 301,049.80

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1.5x scale

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.