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Finding the Fourth Proportional to 419,958.11, 629,939.61 and 104,415.01

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Solution

The fourth proportional to 419,958.11, 629,939.61 and 104,415.01 is: 156,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,958.11 : 629,939.61 = 104,415.01 : x
  2. Step 2: Convert to fraction form
    419,958.11/629,939.61 = 104,415.01/x
  3. Step 3: Cross multiply
    419,958.11x = 629,939.61 × 104,415.01
  4. Step 4: Simplify right side
    419,958.11x = 65,775,151,466.59
  5. Step 5: Solve for x
    x = 65,775,151,466.59/419,958.11
  6. Step 6: Final answer
    x = 156,623.13

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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.