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Finding the Fourth Proportional to 272,759.52, 409,203.68 and 85,771.04

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Solution

The fourth proportional to 272,759.52, 409,203.68 and 85,771.04 is: 128,676.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,759.52 : 409,203.68 = 85,771.04 : x
  2. Step 2: Convert to fraction form
    272,759.52/409,203.68 = 85,771.04/x
  3. Step 3: Cross multiply
    272,759.52x = 409,203.68 × 85,771.04
  4. Step 4: Simplify right side
    272,759.52x = 35,097,825,205.43
  5. Step 5: Solve for x
    x = 35,097,825,205.43/272,759.52
  6. Step 6: Final answer
    x = 128,676.81

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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.