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Finding the Fourth Proportional to 261,235.91, 391,858.72 and 74,252.27

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Solution

The fourth proportional to 261,235.91, 391,858.72 and 74,252.27 is: 111,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,235.91 : 391,858.72 = 74,252.27 : x
  2. Step 2: Convert to fraction form
    261,235.91/391,858.72 = 74,252.27/x
  3. Step 3: Cross multiply
    261,235.91x = 391,858.72 × 74,252.27
  4. Step 4: Simplify right side
    261,235.91x = 29,096,397,520.00
  5. Step 5: Solve for x
    x = 29,096,397,520.00/261,235.91
  6. Step 6: Final answer
    x = 111,379.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.