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Finding the Fourth Proportional to 494,546.40, 741,700.80 and 139,593.60

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Solution

The fourth proportional to 494,546.40, 741,700.80 and 139,593.60 is: 209,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,546.40 : 741,700.80 = 139,593.60 : x
  2. Step 2: Convert to fraction form
    494,546.40/741,700.80 = 139,593.60/x
  3. Step 3: Cross multiply
    494,546.40x = 741,700.80 × 139,593.60
  4. Step 4: Simplify right side
    494,546.40x = 103,536,684,794.88
  5. Step 5: Solve for x
    x = 103,536,684,794.88/494,546.40
  6. Step 6: Final answer
    x = 209,356.87

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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.