Home / 455,540.20-683,310.30-218,825.80

Finding the Fourth Proportional to 455,540.20, 683,310.30 and 218,825.80

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Solution

The fourth proportional to 455,540.20, 683,310.30 and 218,825.80 is: 328,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,540.20 : 683,310.30 = 218,825.80 : x
  2. Step 2: Convert to fraction form
    455,540.20/683,310.30 = 218,825.80/x
  3. Step 3: Cross multiply
    455,540.20x = 683,310.30 × 218,825.80
  4. Step 4: Simplify right side
    455,540.20x = 149,525,923,045.74
  5. Step 5: Solve for x
    x = 149,525,923,045.74/455,540.20
  6. Step 6: Final answer
    x = 328,238.70

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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.