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Finding the Fourth Proportional to 208,126.20, 311,843.70 and 178,404.60

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Solution

The fourth proportional to 208,126.20, 311,843.70 and 178,404.60 is: 267,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,126.20 : 311,843.70 = 178,404.60 : x
  2. Step 2: Convert to fraction form
    208,126.20/311,843.70 = 178,404.60/x
  3. Step 3: Cross multiply
    208,126.20x = 311,843.70 × 178,404.60
  4. Step 4: Simplify right side
    208,126.20x = 55,634,350,561.02
  5. Step 5: Solve for x
    x = 55,634,350,561.02/208,126.20
  6. Step 6: Final answer
    x = 267,310.65

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1.5x scale

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.