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Finding the Fourth Proportional to 269,131.70, 403,211.55 and 156,719.90

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Solution

The fourth proportional to 269,131.70, 403,211.55 and 156,719.90 is: 234,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,131.70 : 403,211.55 = 156,719.90 : x
  2. Step 2: Convert to fraction form
    269,131.70/403,211.55 = 156,719.90/x
  3. Step 3: Cross multiply
    269,131.70x = 403,211.55 × 156,719.90
  4. Step 4: Simplify right side
    269,131.70x = 63,191,273,794.85
  5. Step 5: Solve for x
    x = 63,191,273,794.85/269,131.70
  6. Step 6: Final answer
    x = 234,796.84

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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.