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Finding the Fourth Proportional to 429,435.20, 643,375.20 and 367,227.20

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Solution

The fourth proportional to 429,435.20, 643,375.20 and 367,227.20 is: 550,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,435.20 : 643,375.20 = 367,227.20 : x
  2. Step 2: Convert to fraction form
    429,435.20/643,375.20 = 367,227.20/x
  3. Step 3: Cross multiply
    429,435.20x = 643,375.20 × 367,227.20
  4. Step 4: Simplify right side
    429,435.20x = 236,264,873,245.44
  5. Step 5: Solve for x
    x = 236,264,873,245.44/429,435.20
  6. Step 6: Final answer
    x = 550,175.84

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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.