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Finding the Fourth Proportional to 515,563.43, 773,160.66 and 178,513.65

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Solution

The fourth proportional to 515,563.43, 773,160.66 and 178,513.65 is: 267,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,563.43 : 773,160.66 = 178,513.65 : x
  2. Step 2: Convert to fraction form
    515,563.43/773,160.66 = 178,513.65/x
  3. Step 3: Cross multiply
    515,563.43x = 773,160.66 × 178,513.65
  4. Step 4: Simplify right side
    515,563.43x = 138,019,731,453.01
  5. Step 5: Solve for x
    x = 138,019,731,453.01/515,563.43
  6. Step 6: Final answer
    x = 267,706.60

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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.