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Finding the Fourth Proportional to 505,118.77, 757,650.44 and 305,385.53

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Solution

The fourth proportional to 505,118.77, 757,650.44 and 305,385.53 is: 458,061.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,118.77 : 757,650.44 = 305,385.53 : x
  2. Step 2: Convert to fraction form
    505,118.77/757,650.44 = 305,385.53/x
  3. Step 3: Cross multiply
    505,118.77x = 757,650.44 × 305,385.53
  4. Step 4: Simplify right side
    505,118.77x = 231,375,478,149.35
  5. Step 5: Solve for x
    x = 231,375,478,149.35/505,118.77
  6. Step 6: Final answer
    x = 458,061.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.