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Finding the Fourth Proportional to 291,734.40, 437,634.42 and 91,995.69

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Solution

The fourth proportional to 291,734.40, 437,634.42 and 91,995.69 is: 138,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,734.40 : 437,634.42 = 91,995.69 : x
  2. Step 2: Convert to fraction form
    291,734.40/437,634.42 = 91,995.69/x
  3. Step 3: Cross multiply
    291,734.40x = 437,634.42 × 91,995.69
  4. Step 4: Simplify right side
    291,734.40x = 40,260,480,435.65
  5. Step 5: Solve for x
    x = 40,260,480,435.65/291,734.40
  6. Step 6: Final answer
    x = 138,003.88

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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.