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Finding the Fourth Proportional to 252,428.52, 348,351.72 and 139,251

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Solution

The fourth proportional to 252,428.52, 348,351.72 and 139,251 is: 192,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,428.52 : 348,351.72 = 139,251 : x
  2. Step 2: Convert to fraction form
    252,428.52/348,351.72 = 139,251/x
  3. Step 3: Cross multiply
    252,428.52x = 348,351.72 × 139,251
  4. Step 4: Simplify right side
    252,428.52x = 48,508,325,361.72
  5. Step 5: Solve for x
    x = 48,508,325,361.72/252,428.52
  6. Step 6: Final answer
    x = 192,166.58

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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.