Home / 820,217.45-1,230,390.59-221,169.59

Finding the Fourth Proportional to 820,217.45, 1,230,390.59 and 221,169.59

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Solution

The fourth proportional to 820,217.45, 1,230,390.59 and 221,169.59 is: 331,771.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,217.45 : 1,230,390.59 = 221,169.59 : x
  2. Step 2: Convert to fraction form
    820,217.45/1,230,390.59 = 221,169.59/x
  3. Step 3: Cross multiply
    820,217.45x = 1,230,390.59 × 221,169.59
  4. Step 4: Simplify right side
    820,217.45x = 272,124,975,072.36
  5. Step 5: Solve for x
    x = 272,124,975,072.36/820,217.45
  6. Step 6: Final answer
    x = 331,771.75

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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.