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Finding the Fourth Proportional to 419,612.08, 579,064.32 and 228,627.04

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Solution

The fourth proportional to 419,612.08, 579,064.32 and 228,627.04 is: 315,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,612.08 : 579,064.32 = 228,627.04 : x
  2. Step 2: Convert to fraction form
    419,612.08/579,064.32 = 228,627.04/x
  3. Step 3: Cross multiply
    419,612.08x = 579,064.32 × 228,627.04
  4. Step 4: Simplify right side
    419,612.08x = 132,389,761,451.21
  5. Step 5: Solve for x
    x = 132,389,761,451.21/419,612.08
  6. Step 6: Final answer
    x = 315,505.12

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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.