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Finding the Fourth Proportional to 423,265.78, 634,958.22 and 123,768.88

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Solution

The fourth proportional to 423,265.78, 634,958.22 and 123,768.88 is: 185,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,265.78 : 634,958.22 = 123,768.88 : x
  2. Step 2: Convert to fraction form
    423,265.78/634,958.22 = 123,768.88/x
  3. Step 3: Cross multiply
    423,265.78x = 634,958.22 × 123,768.88
  4. Step 4: Simplify right side
    423,265.78x = 78,588,067,736.19
  5. Step 5: Solve for x
    x = 78,588,067,736.19/423,265.78
  6. Step 6: Final answer
    x = 185,670.73

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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.