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Finding the Fourth Proportional to 355,281.20, 490,273.42 and 194,141.80

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Solution

The fourth proportional to 355,281.20, 490,273.42 and 194,141.80 is: 267,907.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,281.20 : 490,273.42 = 194,141.80 : x
  2. Step 2: Convert to fraction form
    355,281.20/490,273.42 = 194,141.80/x
  3. Step 3: Cross multiply
    355,281.20x = 490,273.42 × 194,141.80
  4. Step 4: Simplify right side
    355,281.20x = 95,182,564,250.96
  5. Step 5: Solve for x
    x = 95,182,564,250.96/355,281.20
  6. Step 6: Final answer
    x = 267,907.69

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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.