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Finding the Fourth Proportional to 419,467.76, 578,874.36 and 228,480.68

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Solution

The fourth proportional to 419,467.76, 578,874.36 and 228,480.68 is: 315,308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,467.76 : 578,874.36 = 228,480.68 : x
  2. Step 2: Convert to fraction form
    419,467.76/578,874.36 = 228,480.68/x
  3. Step 3: Cross multiply
    419,467.76x = 578,874.36 × 228,480.68
  4. Step 4: Simplify right side
    419,467.76x = 132,261,607,407.37
  5. Step 5: Solve for x
    x = 132,261,607,407.37/419,467.76
  6. Step 6: Final answer
    x = 315,308.16

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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.