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Finding the Fourth Proportional to 419,935.38, 629,914 and 120,403.86

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Solution

The fourth proportional to 419,935.38, 629,914 and 120,403.86 is: 180,608.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,935.38 : 629,914 = 120,403.86 : x
  2. Step 2: Convert to fraction form
    419,935.38/629,914 = 120,403.86/x
  3. Step 3: Cross multiply
    419,935.38x = 629,914 × 120,403.86
  4. Step 4: Simplify right side
    419,935.38x = 75,844,077,068.04
  5. Step 5: Solve for x
    x = 75,844,077,068.04/419,935.38
  6. Step 6: Final answer
    x = 180,608.92

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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.