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Finding the Fourth Proportional to 252,841.89, 348,920.74 and 139,664.64

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Solution

The fourth proportional to 252,841.89, 348,920.74 and 139,664.64 is: 192,736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,841.89 : 348,920.74 = 139,664.64 : x
  2. Step 2: Convert to fraction form
    252,841.89/348,920.74 = 139,664.64/x
  3. Step 3: Cross multiply
    252,841.89x = 348,920.74 × 139,664.64
  4. Step 4: Simplify right side
    252,841.89x = 48,731,889,540.63
  5. Step 5: Solve for x
    x = 48,731,889,540.63/252,841.89
  6. Step 6: Final answer
    x = 192,736.61

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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.