Home / 419,155.22-578,434.27-228,170.05

Finding the Fourth Proportional to 419,155.22, 578,434.27 and 228,170.05

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Solution

The fourth proportional to 419,155.22, 578,434.27 and 228,170.05 is: 314,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,155.22 : 578,434.27 = 228,170.05 : x
  2. Step 2: Convert to fraction form
    419,155.22/578,434.27 = 228,170.05/x
  3. Step 3: Cross multiply
    419,155.22x = 578,434.27 × 228,170.05
  4. Step 4: Simplify right side
    419,155.22x = 131,981,373,415.44
  5. Step 5: Solve for x
    x = 131,981,373,415.44/419,155.22
  6. Step 6: Final answer
    x = 314,874.70

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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.