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Finding the Fourth Proportional to 508,245.11, 701,373.31 and 278,791.56

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Solution

The fourth proportional to 508,245.11, 701,373.31 and 278,791.56 is: 384,729.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,245.11 : 701,373.31 = 278,791.56 : x
  2. Step 2: Convert to fraction form
    508,245.11/701,373.31 = 278,791.56/x
  3. Step 3: Cross multiply
    508,245.11x = 701,373.31 × 278,791.56
  4. Step 4: Simplify right side
    508,245.11x = 195,536,959,237.26
  5. Step 5: Solve for x
    x = 195,536,959,237.26/508,245.11
  6. Step 6: Final answer
    x = 384,729.64

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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.