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Finding the Fourth Proportional to 291,855.93, 437,785.11 and 81,493.26

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Solution

The fourth proportional to 291,855.93, 437,785.11 and 81,493.26 is: 122,240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,855.93 : 437,785.11 = 81,493.26 : x
  2. Step 2: Convert to fraction form
    291,855.93/437,785.11 = 81,493.26/x
  3. Step 3: Cross multiply
    291,855.93x = 437,785.11 × 81,493.26
  4. Step 4: Simplify right side
    291,855.93x = 35,676,535,793.36
  5. Step 5: Solve for x
    x = 35,676,535,793.36/291,855.93
  6. Step 6: Final answer
    x = 122,240.23

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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.