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Finding the Fourth Proportional to 454,965.92, 682,548.72 and 139,446.56

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Solution

The fourth proportional to 454,965.92, 682,548.72 and 139,446.56 is: 209,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,965.92 : 682,548.72 = 139,446.56 : x
  2. Step 2: Convert to fraction form
    454,965.92/682,548.72 = 139,446.56/x
  3. Step 3: Cross multiply
    454,965.92x = 682,548.72 × 139,446.56
  4. Step 4: Simplify right side
    454,965.92x = 95,179,071,036.40
  5. Step 5: Solve for x
    x = 95,179,071,036.40/454,965.92
  6. Step 6: Final answer
    x = 209,200.44

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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.