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Finding the Fourth Proportional to 171,321.51, 256,515.71 and 133,238.55

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Solution

The fourth proportional to 171,321.51, 256,515.71 and 133,238.55 is: 199,494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,321.51 : 256,515.71 = 133,238.55 : x
  2. Step 2: Convert to fraction form
    171,321.51/256,515.71 = 133,238.55/x
  3. Step 3: Cross multiply
    171,321.51x = 256,515.71 × 133,238.55
  4. Step 4: Simplify right side
    171,321.51x = 34,177,780,586.43
  5. Step 5: Solve for x
    x = 34,177,780,586.43/171,321.51
  6. Step 6: Final answer
    x = 199,494.98

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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.