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Finding the Fourth Proportional to 251,481.40, 377,211.30 and 85,269.40

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Solution

The fourth proportional to 251,481.40, 377,211.30 and 85,269.40 is: 127,900.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,481.40 : 377,211.30 = 85,269.40 : x
  2. Step 2: Convert to fraction form
    251,481.40/377,211.30 = 85,269.40/x
  3. Step 3: Cross multiply
    251,481.40x = 377,211.30 × 85,269.40
  4. Step 4: Simplify right side
    251,481.40x = 32,164,581,224.22
  5. Step 5: Solve for x
    x = 32,164,581,224.22/251,481.40
  6. Step 6: Final answer
    x = 127,900.44

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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.