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Finding the Fourth Proportional to 291,179.01, 436,768.38 and 80,816.88

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Solution

The fourth proportional to 291,179.01, 436,768.38 and 80,816.88 is: 121,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,179.01 : 436,768.38 = 80,816.88 : x
  2. Step 2: Convert to fraction form
    291,179.01/436,768.38 = 80,816.88/x
  3. Step 3: Cross multiply
    291,179.01x = 436,768.38 × 80,816.88
  4. Step 4: Simplify right side
    291,179.01x = 35,298,257,754.25
  5. Step 5: Solve for x
    x = 35,298,257,754.25/291,179.01
  6. Step 6: Final answer
    x = 121,225.28

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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.