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Finding the Fourth Proportional to 492,996.70, 739,486.14 and 138,005.29

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Solution

The fourth proportional to 492,996.70, 739,486.14 and 138,005.29 is: 207,005.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,996.70 : 739,486.14 = 138,005.29 : x
  2. Step 2: Convert to fraction form
    492,996.70/739,486.14 = 138,005.29/x
  3. Step 3: Cross multiply
    492,996.70x = 739,486.14 × 138,005.29
  4. Step 4: Simplify right side
    492,996.70x = 102,052,999,201.68
  5. Step 5: Solve for x
    x = 102,052,999,201.68/492,996.70
  6. Step 6: Final answer
    x = 207,005.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.