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Finding the Fourth Proportional to 171,447.80, 256,734.30 and 136,455.80

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Solution

The fourth proportional to 171,447.80, 256,734.30 and 136,455.80 is: 204,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,447.80 : 256,734.30 = 136,455.80 : x
  2. Step 2: Convert to fraction form
    171,447.80/256,734.30 = 136,455.80/x
  3. Step 3: Cross multiply
    171,447.80x = 256,734.30 × 136,455.80
  4. Step 4: Simplify right side
    171,447.80x = 35,032,884,293.94
  5. Step 5: Solve for x
    x = 35,032,884,293.94/171,447.80
  6. Step 6: Final answer
    x = 204,335.57

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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.