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Finding the Fourth Proportional to 171,470.60, 257,246.42 and 71,575.28

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Solution

The fourth proportional to 171,470.60, 257,246.42 and 71,575.28 is: 107,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,470.60 : 257,246.42 = 71,575.28 : x
  2. Step 2: Convert to fraction form
    171,470.60/257,246.42 = 71,575.28/x
  3. Step 3: Cross multiply
    171,470.60x = 257,246.42 × 71,575.28
  4. Step 4: Simplify right side
    171,470.60x = 18,412,484,540.50
  5. Step 5: Solve for x
    x = 18,412,484,540.50/171,470.60
  6. Step 6: Final answer
    x = 107,379.83

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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.