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Finding the Fourth Proportional to 426,187.48, 639,170.52 and 126,597.64

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Solution

The fourth proportional to 426,187.48, 639,170.52 and 126,597.64 is: 189,863.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,187.48 : 639,170.52 = 126,597.64 : x
  2. Step 2: Convert to fraction form
    426,187.48/639,170.52 = 126,597.64/x
  3. Step 3: Cross multiply
    426,187.48x = 639,170.52 × 126,597.64
  4. Step 4: Simplify right side
    426,187.48x = 80,917,479,389.57
  5. Step 5: Solve for x
    x = 80,917,479,389.57/426,187.48
  6. Step 6: Final answer
    x = 189,863.58

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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.