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Finding the Fourth Proportional to 291,734.60, 437,563.02 and 81,354.92

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Solution

The fourth proportional to 291,734.60, 437,563.02 and 81,354.92 is: 122,021.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,734.60 : 437,563.02 = 81,354.92 : x
  2. Step 2: Convert to fraction form
    291,734.60/437,563.02 = 81,354.92/x
  3. Step 3: Cross multiply
    291,734.60x = 437,563.02 × 81,354.92
  4. Step 4: Simplify right side
    291,734.60x = 35,597,904,487.06
  5. Step 5: Solve for x
    x = 35,597,904,487.06/291,734.60
  6. Step 6: Final answer
    x = 122,021.54

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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.