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Finding the Fourth Proportional to 419,797.78, 629,511.27 and 120,210.28

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Solution

The fourth proportional to 419,797.78, 629,511.27 and 120,210.28 is: 180,262.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,797.78 : 629,511.27 = 120,210.28 : x
  2. Step 2: Convert to fraction form
    419,797.78/629,511.27 = 120,210.28/x
  3. Step 3: Cross multiply
    419,797.78x = 629,511.27 × 120,210.28
  4. Step 4: Simplify right side
    419,797.78x = 75,673,726,029.86
  5. Step 5: Solve for x
    x = 75,673,726,029.86/419,797.78
  6. Step 6: Final answer
    x = 180,262.33

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1.5x scale

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.