Home / 429,067.43-643,638.65-159,198.62

Finding the Fourth Proportional to 429,067.43, 643,638.65 and 159,198.62

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Solution

The fourth proportional to 429,067.43, 643,638.65 and 159,198.62 is: 238,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,067.43 : 643,638.65 = 159,198.62 : x
  2. Step 2: Convert to fraction form
    429,067.43/643,638.65 = 159,198.62/x
  3. Step 3: Cross multiply
    429,067.43x = 643,638.65 × 159,198.62
  4. Step 4: Simplify right side
    429,067.43x = 102,466,380,844.48
  5. Step 5: Solve for x
    x = 102,466,380,844.48/429,067.43
  6. Step 6: Final answer
    x = 238,811.84

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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.