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Finding the Fourth Proportional to 291,299.37, 436,972.64 and 80,937.33

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Solution

The fourth proportional to 291,299.37, 436,972.64 and 80,937.33 is: 121,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,299.37 : 436,972.64 = 80,937.33 : x
  2. Step 2: Convert to fraction form
    291,299.37/436,972.64 = 80,937.33/x
  3. Step 3: Cross multiply
    291,299.37x = 436,972.64 × 80,937.33
  4. Step 4: Simplify right side
    291,299.37x = 35,367,398,764.65
  5. Step 5: Solve for x
    x = 35,367,398,764.65/291,299.37
  6. Step 6: Final answer
    x = 121,412.55

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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.