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Finding the Fourth Proportional to 254,656.52, 351,425.92 and 139,942.56

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Solution

The fourth proportional to 254,656.52, 351,425.92 and 139,942.56 is: 193,120.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,656.52 : 351,425.92 = 139,942.56 : x
  2. Step 2: Convert to fraction form
    254,656.52/351,425.92 = 139,942.56/x
  3. Step 3: Cross multiply
    254,656.52x = 351,425.92 × 139,942.56
  4. Step 4: Simplify right side
    254,656.52x = 49,179,442,895.16
  5. Step 5: Solve for x
    x = 49,179,442,895.16/254,656.52
  6. Step 6: Final answer
    x = 193,120.69

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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.