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Finding the Fourth Proportional to 355,273.49, 490,280.85 and 194,128.52

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Solution

The fourth proportional to 355,273.49, 490,280.85 and 194,128.52 is: 267,899.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,273.49 : 490,280.85 = 194,128.52 : x
  2. Step 2: Convert to fraction form
    355,273.49/490,280.85 = 194,128.52/x
  3. Step 3: Cross multiply
    355,273.49x = 490,280.85 × 194,128.52
  4. Step 4: Simplify right side
    355,273.49x = 95,177,493,343.44
  5. Step 5: Solve for x
    x = 95,177,493,343.44/355,273.49
  6. Step 6: Final answer
    x = 267,899.23

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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.