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Finding the Fourth Proportional to 291,104, 436,655.92 and 80,741.96

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Solution

The fourth proportional to 291,104, 436,655.92 and 80,741.96 is: 121,112.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,104 : 436,655.92 = 80,741.96 : x
  2. Step 2: Convert to fraction form
    291,104/436,655.92 = 80,741.96/x
  3. Step 3: Cross multiply
    291,104x = 436,655.92 × 80,741.96
  4. Step 4: Simplify right side
    291,104x = 35,256,454,826.40
  5. Step 5: Solve for x
    x = 35,256,454,826.40/291,104
  6. Step 6: Final answer
    x = 121,112.92

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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.