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Finding the Fourth Proportional to 291,299.07, 436,954.08 and 80,942.49

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Solution

The fourth proportional to 291,299.07, 436,954.08 and 80,942.49 is: 121,415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,299.07 : 436,954.08 = 80,942.49 : x
  2. Step 2: Convert to fraction form
    291,299.07/436,954.08 = 80,942.49/x
  3. Step 3: Cross multiply
    291,299.07x = 436,954.08 × 80,942.49
  4. Step 4: Simplify right side
    291,299.07x = 35,368,151,250.86
  5. Step 5: Solve for x
    x = 35,368,151,250.86/291,299.07
  6. Step 6: Final answer
    x = 121,415.26

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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.