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Finding the Fourth Proportional to 642,522.56, 963,936.48 and 221,801.92

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Solution

The fourth proportional to 642,522.56, 963,936.48 and 221,801.92 is: 332,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,522.56 : 963,936.48 = 221,801.92 : x
  2. Step 2: Convert to fraction form
    642,522.56/963,936.48 = 221,801.92/x
  3. Step 3: Cross multiply
    642,522.56x = 963,936.48 × 221,801.92
  4. Step 4: Simplify right side
    642,522.56x = 213,802,962,022.04
  5. Step 5: Solve for x
    x = 213,802,962,022.04/642,522.56
  6. Step 6: Final answer
    x = 332,755.57

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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.