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Finding the Fourth Proportional to 171,271.11, 256,836.42 and 51,285.79

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Solution

The fourth proportional to 171,271.11, 256,836.42 and 51,285.79 is: 76,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,271.11 : 256,836.42 = 51,285.79 : x
  2. Step 2: Convert to fraction form
    171,271.11/256,836.42 = 51,285.79/x
  3. Step 3: Cross multiply
    171,271.11x = 256,836.42 × 51,285.79
  4. Step 4: Simplify right side
    171,271.11x = 13,172,059,021.52
  5. Step 5: Solve for x
    x = 13,172,059,021.52/171,271.11
  6. Step 6: Final answer
    x = 76,907.65

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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.