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Finding the Fourth Proportional to 171,059.20, 256,588.80 and 168,143.20

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Solution

The fourth proportional to 171,059.20, 256,588.80 and 168,143.20 is: 252,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,059.20 : 256,588.80 = 168,143.20 : x
  2. Step 2: Convert to fraction form
    171,059.20/256,588.80 = 168,143.20/x
  3. Step 3: Cross multiply
    171,059.20x = 256,588.80 × 168,143.20
  4. Step 4: Simplify right side
    171,059.20x = 43,143,661,916.16
  5. Step 5: Solve for x
    x = 43,143,661,916.16/171,059.20
  6. Step 6: Final answer
    x = 252,214.80

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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.