Home / 419,528.91-578,944.66-228,538.20

Finding the Fourth Proportional to 419,528.91, 578,944.66 and 228,538.20

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Solution

The fourth proportional to 419,528.91, 578,944.66 and 228,538.20 is: 315,379.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,528.91 : 578,944.66 = 228,538.20 : x
  2. Step 2: Convert to fraction form
    419,528.91/578,944.66 = 228,538.20/x
  3. Step 3: Cross multiply
    419,528.91x = 578,944.66 × 228,538.20
  4. Step 4: Simplify right side
    419,528.91x = 132,310,970,496.01
  5. Step 5: Solve for x
    x = 132,310,970,496.01/419,528.91
  6. Step 6: Final answer
    x = 315,379.86

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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.