Home / 647,919.44-971,872.14-221,451.20

Finding the Fourth Proportional to 647,919.44, 971,872.14 and 221,451.20

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Solution

The fourth proportional to 647,919.44, 971,872.14 and 221,451.20 is: 332,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,919.44 : 971,872.14 = 221,451.20 : x
  2. Step 2: Convert to fraction form
    647,919.44/971,872.14 = 221,451.20/x
  3. Step 3: Cross multiply
    647,919.44x = 971,872.14 × 221,451.20
  4. Step 4: Simplify right side
    647,919.44x = 215,222,251,649.57
  5. Step 5: Solve for x
    x = 215,222,251,649.57/647,919.44
  6. Step 6: Final answer
    x = 332,174.40

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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.