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Finding the Fourth Proportional to 252,449.36, 348,362.88 and 139,274

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Solution

The fourth proportional to 252,449.36, 348,362.88 and 139,274 is: 192,188.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,449.36 : 348,362.88 = 139,274 : x
  2. Step 2: Convert to fraction form
    252,449.36/348,362.88 = 139,274/x
  3. Step 3: Cross multiply
    252,449.36x = 348,362.88 × 139,274
  4. Step 4: Simplify right side
    252,449.36x = 48,517,891,749.12
  5. Step 5: Solve for x
    x = 48,517,891,749.12/252,449.36
  6. Step 6: Final answer
    x = 192,188.61

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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.