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Finding the Fourth Proportional to 492,866.49, 739,344.81 and 137,879.46

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Solution

The fourth proportional to 492,866.49, 739,344.81 and 137,879.46 is: 206,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,866.49 : 739,344.81 = 137,879.46 : x
  2. Step 2: Convert to fraction form
    492,866.49/739,344.81 = 137,879.46/x
  3. Step 3: Cross multiply
    492,866.49x = 739,344.81 × 137,879.46
  4. Step 4: Simplify right side
    492,866.49x = 101,940,463,156.60
  5. Step 5: Solve for x
    x = 101,940,463,156.60/492,866.49
  6. Step 6: Final answer
    x = 206,831.80

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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.