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Finding the Fourth Proportional to 521,375.39, 782,187.93 and 217,600.63

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Solution

The fourth proportional to 521,375.39, 782,187.93 and 217,600.63 is: 326,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,375.39 : 782,187.93 = 217,600.63 : x
  2. Step 2: Convert to fraction form
    521,375.39/782,187.93 = 217,600.63/x
  3. Step 3: Cross multiply
    521,375.39x = 782,187.93 × 217,600.63
  4. Step 4: Simplify right side
    521,375.39x = 170,204,584,390.93
  5. Step 5: Solve for x
    x = 170,204,584,390.93/521,375.39
  6. Step 6: Final answer
    x = 326,453.05

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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.