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Finding the Fourth Proportional to 254,615.81, 351,375.71 and 139,901.61

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Solution

The fourth proportional to 254,615.81, 351,375.71 and 139,901.61 is: 193,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,615.81 : 351,375.71 = 139,901.61 : x
  2. Step 2: Convert to fraction form
    254,615.81/351,375.71 = 139,901.61/x
  3. Step 3: Cross multiply
    254,615.81x = 351,375.71 × 139,901.61
  4. Step 4: Simplify right side
    254,615.81x = 49,158,028,162.04
  5. Step 5: Solve for x
    x = 49,158,028,162.04/254,615.81
  6. Step 6: Final answer
    x = 193,067.47

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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.