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Finding the Fourth Proportional to 395,484.89, 545,778.47 and 225,734.81

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Solution

The fourth proportional to 395,484.89, 545,778.47 and 225,734.81 is: 311,519.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,484.89 : 545,778.47 = 225,734.81 : x
  2. Step 2: Convert to fraction form
    395,484.89/545,778.47 = 225,734.81/x
  3. Step 3: Cross multiply
    395,484.89x = 545,778.47 × 225,734.81
  4. Step 4: Simplify right side
    395,484.89x = 123,201,197,062.99
  5. Step 5: Solve for x
    x = 123,201,197,062.99/395,484.89
  6. Step 6: Final answer
    x = 311,519.36

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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.