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Finding the Fourth Proportional to 356,285.72, 491,679.90 and 195,137.88

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Solution

The fourth proportional to 356,285.72, 491,679.90 and 195,137.88 is: 269,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,285.72 : 491,679.90 = 195,137.88 : x
  2. Step 2: Convert to fraction form
    356,285.72/491,679.90 = 195,137.88/x
  3. Step 3: Cross multiply
    356,285.72x = 491,679.90 × 195,137.88
  4. Step 4: Simplify right side
    356,285.72x = 95,945,373,324.61
  5. Step 5: Solve for x
    x = 95,945,373,324.61/356,285.72
  6. Step 6: Final answer
    x = 269,293.35

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1.5x scale

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.