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Finding the Fourth Proportional to 647,950.77, 971,922.04 and 221,280.73

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Solution

The fourth proportional to 647,950.77, 971,922.04 and 221,280.73 is: 331,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,950.77 : 971,922.04 = 221,280.73 : x
  2. Step 2: Convert to fraction form
    647,950.77/971,922.04 = 221,280.73/x
  3. Step 3: Cross multiply
    647,950.77x = 971,922.04 × 221,280.73
  4. Step 4: Simplify right side
    647,950.77x = 215,067,618,514.29
  5. Step 5: Solve for x
    x = 215,067,618,514.29/647,950.77
  6. Step 6: Final answer
    x = 331,919.69

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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.