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Finding the Fourth Proportional to 379,521.22, 569,375.25 and 267,420.34

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Solution

The fourth proportional to 379,521.22, 569,375.25 and 267,420.34 is: 401,196.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,521.22 : 569,375.25 = 267,420.34 : x
  2. Step 2: Convert to fraction form
    379,521.22/569,375.25 = 267,420.34/x
  3. Step 3: Cross multiply
    379,521.22x = 569,375.25 × 267,420.34
  4. Step 4: Simplify right side
    379,521.22x = 152,262,522,942.59
  5. Step 5: Solve for x
    x = 152,262,522,942.59/379,521.22
  6. Step 6: Final answer
    x = 401,196.34

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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.