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Finding the Fourth Proportional to 291,235.26, 436,853.07 and 80,873.22

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Solution

The fourth proportional to 291,235.26, 436,853.07 and 80,873.22 is: 121,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,235.26 : 436,853.07 = 80,873.22 : x
  2. Step 2: Convert to fraction form
    291,235.26/436,853.07 = 80,873.22/x
  3. Step 3: Cross multiply
    291,235.26x = 436,853.07 × 80,873.22
  4. Step 4: Simplify right side
    291,235.26x = 35,329,714,437.79
  5. Step 5: Solve for x
    x = 35,329,714,437.79/291,235.26
  6. Step 6: Final answer
    x = 121,309.88

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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.