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Finding the Fourth Proportional to 488,620.08, 674,625.24 and 305,138.88

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Solution

The fourth proportional to 488,620.08, 674,625.24 and 305,138.88 is: 421,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,620.08 : 674,625.24 = 305,138.88 : x
  2. Step 2: Convert to fraction form
    488,620.08/674,625.24 = 305,138.88/x
  3. Step 3: Cross multiply
    488,620.08x = 674,625.24 × 305,138.88
  4. Step 4: Simplify right side
    488,620.08x = 205,854,390,153.33
  5. Step 5: Solve for x
    x = 205,854,390,153.33/488,620.08
  6. Step 6: Final answer
    x = 421,297.44

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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.