Home / 396,041.20-546,536.16-221,611.55

Finding the Fourth Proportional to 396,041.20, 546,536.16 and 221,611.55

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Solution

The fourth proportional to 396,041.20, 546,536.16 and 221,611.55 is: 305,823.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,041.20 : 546,536.16 = 221,611.55 : x
  2. Step 2: Convert to fraction form
    396,041.20/546,536.16 = 221,611.55/x
  3. Step 3: Cross multiply
    396,041.20x = 546,536.16 × 221,611.55
  4. Step 4: Simplify right side
    396,041.20x = 121,118,722,815.97
  5. Step 5: Solve for x
    x = 121,118,722,815.97/396,041.20
  6. Step 6: Final answer
    x = 305,823.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.