Home / 419,405.29-578,785.89-228,418.53

Finding the Fourth Proportional to 419,405.29, 578,785.89 and 228,418.53

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Solution

The fourth proportional to 419,405.29, 578,785.89 and 228,418.53 is: 315,221.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,405.29 : 578,785.89 = 228,418.53 : x
  2. Step 2: Convert to fraction form
    419,405.29/578,785.89 = 228,418.53/x
  3. Step 3: Cross multiply
    419,405.29x = 578,785.89 × 228,418.53
  4. Step 4: Simplify right side
    419,405.29x = 132,205,422,178.54
  5. Step 5: Solve for x
    x = 132,205,422,178.54/419,405.29
  6. Step 6: Final answer
    x = 315,221.16

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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.