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Finding the Fourth Proportional to 395,195.76, 545,221.28 and 259,304.72

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Solution

The fourth proportional to 395,195.76, 545,221.28 and 259,304.72 is: 357,742.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,195.76 : 545,221.28 = 259,304.72 : x
  2. Step 2: Convert to fraction form
    395,195.76/545,221.28 = 259,304.72/x
  3. Step 3: Cross multiply
    395,195.76x = 545,221.28 × 259,304.72
  4. Step 4: Simplify right side
    395,195.76x = 141,378,451,348.44
  5. Step 5: Solve for x
    x = 141,378,451,348.44/395,195.76
  6. Step 6: Final answer
    x = 357,742.83

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1.5x scale

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.