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Finding the Fourth Proportional to 355,215.40, 490,182.71 and 194,076.02

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Solution

The fourth proportional to 355,215.40, 490,182.71 and 194,076.02 is: 267,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,215.40 : 490,182.71 = 194,076.02 : x
  2. Step 2: Convert to fraction form
    355,215.40/490,182.71 = 194,076.02/x
  3. Step 3: Cross multiply
    355,215.40x = 490,182.71 × 194,076.02
  4. Step 4: Simplify right side
    355,215.40x = 95,132,709,684.69
  5. Step 5: Solve for x
    x = 95,132,709,684.69/355,215.40
  6. Step 6: Final answer
    x = 267,816.97

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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.