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Finding the Fourth Proportional to 291,175.98, 436,763.97 and 80,813.94

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Solution

The fourth proportional to 291,175.98, 436,763.97 and 80,813.94 is: 121,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,175.98 : 436,763.97 = 80,813.94 : x
  2. Step 2: Convert to fraction form
    291,175.98/436,763.97 = 80,813.94/x
  3. Step 3: Cross multiply
    291,175.98x = 436,763.97 × 80,813.94
  4. Step 4: Simplify right side
    291,175.98x = 35,296,617,265.74
  5. Step 5: Solve for x
    x = 35,296,617,265.74/291,175.98
  6. Step 6: Final answer
    x = 121,220.91

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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.