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Finding the Fourth Proportional to 494,614.80, 741,922.20 and 139,624.20

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Solution

The fourth proportional to 494,614.80, 741,922.20 and 139,624.20 is: 209,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,614.80 : 741,922.20 = 139,624.20 : x
  2. Step 2: Convert to fraction form
    494,614.80/741,922.20 = 139,624.20/x
  3. Step 3: Cross multiply
    494,614.80x = 741,922.20 × 139,624.20
  4. Step 4: Simplify right side
    494,614.80x = 103,590,293,637.24
  5. Step 5: Solve for x
    x = 103,590,293,637.24/494,614.80
  6. Step 6: Final answer
    x = 209,436.30

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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.