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Finding the Fourth Proportional to 395,546.18, 545,906.64 and 223,499.74

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Solution

The fourth proportional to 395,546.18, 545,906.64 and 223,499.74 is: 308,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,546.18 : 545,906.64 = 223,499.74 : x
  2. Step 2: Convert to fraction form
    395,546.18/545,906.64 = 223,499.74/x
  3. Step 3: Cross multiply
    395,546.18x = 545,906.64 × 223,499.74
  4. Step 4: Simplify right side
    395,546.18x = 122,009,992,104.27
  5. Step 5: Solve for x
    x = 122,009,992,104.27/395,546.18
  6. Step 6: Final answer
    x = 308,459.54

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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.