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Finding the Fourth Proportional to 494,189.88, 741,330.96 and 139,203.33

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Solution

The fourth proportional to 494,189.88, 741,330.96 and 139,203.33 is: 208,817.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,189.88 : 741,330.96 = 139,203.33 : x
  2. Step 2: Convert to fraction form
    494,189.88/741,330.96 = 139,203.33/x
  3. Step 3: Cross multiply
    494,189.88x = 741,330.96 × 139,203.33
  4. Step 4: Simplify right side
    494,189.88x = 103,195,738,264.10
  5. Step 5: Solve for x
    x = 103,195,738,264.10/494,189.88
  6. Step 6: Final answer
    x = 208,817.99

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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.