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Finding the Fourth Proportional to 439,540.88, 659,336.87 and 169,670.55

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Solution

The fourth proportional to 439,540.88, 659,336.87 and 169,670.55 is: 254,515.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,540.88 : 659,336.87 = 169,670.55 : x
  2. Step 2: Convert to fraction form
    439,540.88/659,336.87 = 169,670.55/x
  3. Step 3: Cross multiply
    439,540.88x = 659,336.87 × 169,670.55
  4. Step 4: Simplify right side
    439,540.88x = 111,870,051,039.43
  5. Step 5: Solve for x
    x = 111,870,051,039.43/439,540.88
  6. Step 6: Final answer
    x = 254,515.69

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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.