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Finding the Fourth Proportional to 395,483.64, 545,776.75 and 225,733.56

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Solution

The fourth proportional to 395,483.64, 545,776.75 and 225,733.56 is: 311,517.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,483.64 : 545,776.75 = 225,733.56 : x
  2. Step 2: Convert to fraction form
    395,483.64/545,776.75 = 225,733.56/x
  3. Step 3: Cross multiply
    395,483.64x = 545,776.75 × 225,733.56
  4. Step 4: Simplify right side
    395,483.64x = 123,200,128,742.73
  5. Step 5: Solve for x
    x = 123,200,128,742.73/395,483.64
  6. Step 6: Final answer
    x = 311,517.64

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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.