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Finding the Fourth Proportional to 543,611.20, 815,416.80 and 169,634.20

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Solution

The fourth proportional to 543,611.20, 815,416.80 and 169,634.20 is: 254,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,611.20 : 815,416.80 = 169,634.20 : x
  2. Step 2: Convert to fraction form
    543,611.20/815,416.80 = 169,634.20/x
  3. Step 3: Cross multiply
    543,611.20x = 815,416.80 × 169,634.20
  4. Step 4: Simplify right side
    543,611.20x = 138,322,576,534.56
  5. Step 5: Solve for x
    x = 138,322,576,534.56/543,611.20
  6. Step 6: Final answer
    x = 254,451.30

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1.5x scale

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.