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Finding the Fourth Proportional to 355,273.20, 490,262.40 and 194,133.72

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Solution

The fourth proportional to 355,273.20, 490,262.40 and 194,133.72 is: 267,896.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,273.20 : 490,262.40 = 194,133.72 : x
  2. Step 2: Convert to fraction form
    355,273.20/490,262.40 = 194,133.72/x
  3. Step 3: Cross multiply
    355,273.20x = 490,262.40 × 194,133.72
  4. Step 4: Simplify right side
    355,273.20x = 95,176,463,488.13
  5. Step 5: Solve for x
    x = 95,176,463,488.13/355,273.20
  6. Step 6: Final answer
    x = 267,896.55

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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.