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Finding the Fourth Proportional to 247,003.66, 340,860.60 and 139,571.38

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Solution

The fourth proportional to 247,003.66, 340,860.60 and 139,571.38 is: 192,605.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,003.66 : 340,860.60 = 139,571.38 : x
  2. Step 2: Convert to fraction form
    247,003.66/340,860.60 = 139,571.38/x
  3. Step 3: Cross multiply
    247,003.66x = 340,860.60 × 139,571.38
  4. Step 4: Simplify right side
    247,003.66x = 47,574,383,477.48
  5. Step 5: Solve for x
    x = 47,574,383,477.48/247,003.66
  6. Step 6: Final answer
    x = 192,605.99

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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.