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Finding the Fourth Proportional to 291,297.07, 436,951.08 and 80,940.49

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Solution

The fourth proportional to 291,297.07, 436,951.08 and 80,940.49 is: 121,412.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,297.07 : 436,951.08 = 80,940.49 : x
  2. Step 2: Convert to fraction form
    291,297.07/436,951.08 = 80,940.49/x
  3. Step 3: Cross multiply
    291,297.07x = 436,951.08 × 80,940.49
  4. Step 4: Simplify right side
    291,297.07x = 35,367,034,521.23
  5. Step 5: Solve for x
    x = 35,367,034,521.23/291,297.07
  6. Step 6: Final answer
    x = 121,412.26

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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.