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Finding the Fourth Proportional to 291,072.48, 436,608.72 and 104,072.64

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Solution

The fourth proportional to 291,072.48, 436,608.72 and 104,072.64 is: 156,108.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,072.48 : 436,608.72 = 104,072.64 : x
  2. Step 2: Convert to fraction form
    291,072.48/436,608.72 = 104,072.64/x
  3. Step 3: Cross multiply
    291,072.48x = 436,608.72 × 104,072.64
  4. Step 4: Simplify right side
    291,072.48x = 45,439,022,137.42
  5. Step 5: Solve for x
    x = 45,439,022,137.42/291,072.48
  6. Step 6: Final answer
    x = 156,108.96

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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.