Home / 820,397.88-1,230,596.82-221,359.05

Finding the Fourth Proportional to 820,397.88, 1,230,596.82 and 221,359.05

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Solution

The fourth proportional to 820,397.88, 1,230,596.82 and 221,359.05 is: 332,038.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,397.88 : 1,230,596.82 = 221,359.05 : x
  2. Step 2: Convert to fraction form
    820,397.88/1,230,596.82 = 221,359.05/x
  3. Step 3: Cross multiply
    820,397.88x = 1,230,596.82 × 221,359.05
  4. Step 4: Simplify right side
    820,397.88x = 272,403,743,008.22
  5. Step 5: Solve for x
    x = 272,403,743,008.22/820,397.88
  6. Step 6: Final answer
    x = 332,038.58

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Similar ratio
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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.