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Finding the Fourth Proportional to 291,086.48, 436,629.72 and 104,086.64

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Solution

The fourth proportional to 291,086.48, 436,629.72 and 104,086.64 is: 156,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,086.48 : 436,629.72 = 104,086.64 : x
  2. Step 2: Convert to fraction form
    291,086.48/436,629.72 = 104,086.64/x
  3. Step 3: Cross multiply
    291,086.48x = 436,629.72 × 104,086.64
  4. Step 4: Simplify right side
    291,086.48x = 45,447,320,478.94
  5. Step 5: Solve for x
    x = 45,447,320,478.94/291,086.48
  6. Step 6: Final answer
    x = 156,129.96

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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.