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Finding the Fourth Proportional to 392,327.75, 588,579.11 and 143,009.75

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Solution

The fourth proportional to 392,327.75, 588,579.11 and 143,009.75 is: 214,546.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,327.75 : 588,579.11 = 143,009.75 : x
  2. Step 2: Convert to fraction form
    392,327.75/588,579.11 = 143,009.75/x
  3. Step 3: Cross multiply
    392,327.75x = 588,579.11 × 143,009.75
  4. Step 4: Simplify right side
    392,327.75x = 84,172,551,376.32
  5. Step 5: Solve for x
    x = 84,172,551,376.32/392,327.75
  6. Step 6: Final answer
    x = 214,546.51

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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.