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Finding the Fourth Proportional to 355,158.18, 490,128.82 and 194,015.90

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Solution

The fourth proportional to 355,158.18, 490,128.82 and 194,015.90 is: 267,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,158.18 : 490,128.82 = 194,015.90 : x
  2. Step 2: Convert to fraction form
    355,158.18/490,128.82 = 194,015.90/x
  3. Step 3: Cross multiply
    355,158.18x = 490,128.82 × 194,015.90
  4. Step 4: Simplify right side
    355,158.18x = 95,092,784,128.24
  5. Step 5: Solve for x
    x = 95,092,784,128.24/355,158.18
  6. Step 6: Final answer
    x = 267,747.70

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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.