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Finding the Fourth Proportional to 171,325.40, 256,840.40 and 82,641.24

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Solution

The fourth proportional to 171,325.40, 256,840.40 and 82,641.24 is: 123,890.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,325.40 : 256,840.40 = 82,641.24 : x
  2. Step 2: Convert to fraction form
    171,325.40/256,840.40 = 82,641.24/x
  3. Step 3: Cross multiply
    171,325.40x = 256,840.40 × 82,641.24
  4. Step 4: Simplify right side
    171,325.40x = 21,225,609,138.10
  5. Step 5: Solve for x
    x = 21,225,609,138.10/171,325.40
  6. Step 6: Final answer
    x = 123,890.61

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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.