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Finding the Fourth Proportional to 251,491.73, 347,052.89 and 138,316.37

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Solution

The fourth proportional to 251,491.73, 347,052.89 and 138,316.37 is: 190,873.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,491.73 : 347,052.89 = 138,316.37 : x
  2. Step 2: Convert to fraction form
    251,491.73/347,052.89 = 138,316.37/x
  3. Step 3: Cross multiply
    251,491.73x = 347,052.89 × 138,316.37
  4. Step 4: Simplify right side
    251,491.73x = 48,003,095,251.23
  5. Step 5: Solve for x
    x = 48,003,095,251.23/251,491.73
  6. Step 6: Final answer
    x = 190,873.45

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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.