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Finding the Fourth Proportional to 239,874.25, 331,055.63 and 139,272.25

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Solution

The fourth proportional to 239,874.25, 331,055.63 and 139,272.25 is: 192,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,874.25 : 331,055.63 = 139,272.25 : x
  2. Step 2: Convert to fraction form
    239,874.25/331,055.63 = 139,272.25/x
  3. Step 3: Cross multiply
    239,874.25x = 331,055.63 × 139,272.25
  4. Step 4: Simplify right side
    239,874.25x = 46,106,862,465.27
  5. Step 5: Solve for x
    x = 46,106,862,465.27/239,874.25
  6. Step 6: Final answer
    x = 192,212.64

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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.