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Finding the Fourth Proportional to 171,415.64, 256,604.60 and 155,620.64

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Solution

The fourth proportional to 171,415.64, 256,604.60 and 155,620.64 is: 232,959.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,415.64 : 256,604.60 = 155,620.64 : x
  2. Step 2: Convert to fraction form
    171,415.64/256,604.60 = 155,620.64/x
  3. Step 3: Cross multiply
    171,415.64x = 256,604.60 × 155,620.64
  4. Step 4: Simplify right side
    171,415.64x = 39,932,972,078.94
  5. Step 5: Solve for x
    x = 39,932,972,078.94/171,415.64
  6. Step 6: Final answer
    x = 232,959.91

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1.5x scale

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.