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Finding the Fourth Proportional to 291,254.36, 436,939.88 and 91,625

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Solution

The fourth proportional to 291,254.36, 436,939.88 and 91,625 is: 137,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,254.36 : 436,939.88 = 91,625 : x
  2. Step 2: Convert to fraction form
    291,254.36/436,939.88 = 91,625/x
  3. Step 3: Cross multiply
    291,254.36x = 436,939.88 × 91,625
  4. Step 4: Simplify right side
    291,254.36x = 40,034,616,505
  5. Step 5: Solve for x
    x = 40,034,616,505/291,254.36
  6. Step 6: Final answer
    x = 137,455.85

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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.