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Finding the Fourth Proportional to 478,351.44, 660,121.92 and 263,486.52

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Solution

The fourth proportional to 478,351.44, 660,121.92 and 263,486.52 is: 363,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,351.44 : 660,121.92 = 263,486.52 : x
  2. Step 2: Convert to fraction form
    478,351.44/660,121.92 = 263,486.52/x
  3. Step 3: Cross multiply
    478,351.44x = 660,121.92 × 263,486.52
  4. Step 4: Simplify right side
    478,351.44x = 173,933,227,476.52
  5. Step 5: Solve for x
    x = 173,933,227,476.52/478,351.44
  6. Step 6: Final answer
    x = 363,609.71

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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.