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Finding the Fourth Proportional to 352,620.44, 528,914.24 and 86,366.86

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Solution

The fourth proportional to 352,620.44, 528,914.24 and 86,366.86 is: 129,546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,620.44 : 528,914.24 = 86,366.86 : x
  2. Step 2: Convert to fraction form
    352,620.44/528,914.24 = 86,366.86/x
  3. Step 3: Cross multiply
    352,620.44x = 528,914.24 × 86,366.86
  4. Step 4: Simplify right side
    352,620.44x = 45,680,660,687.84
  5. Step 5: Solve for x
    x = 45,680,660,687.84/352,620.44
  6. Step 6: Final answer
    x = 129,546.26

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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.