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Finding the Fourth Proportional to 349,105, 481,764.90 and 190,129

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Solution

The fourth proportional to 349,105, 481,764.90 and 190,129 is: 262,378.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,105 : 481,764.90 = 190,129 : x
  2. Step 2: Convert to fraction form
    349,105/481,764.90 = 190,129/x
  3. Step 3: Cross multiply
    349,105x = 481,764.90 × 190,129
  4. Step 4: Simplify right side
    349,105x = 91,597,478,672.10
  5. Step 5: Solve for x
    x = 91,597,478,672.10/349,105
  6. Step 6: Final answer
    x = 262,378.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.