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Finding the Fourth Proportional to 291,324.25, 436,986.51 and 80,964.01

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Solution

The fourth proportional to 291,324.25, 436,986.51 and 80,964.01 is: 121,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,324.25 : 436,986.51 = 80,964.01 : x
  2. Step 2: Convert to fraction form
    291,324.25/436,986.51 = 80,964.01/x
  3. Step 3: Cross multiply
    291,324.25x = 436,986.51 × 80,964.01
  4. Step 4: Simplify right side
    291,324.25x = 35,380,180,165.51
  5. Step 5: Solve for x
    x = 35,380,180,165.51/291,324.25
  6. Step 6: Final answer
    x = 121,446.05

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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.