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Finding the Fourth Proportional to 260,775.45, 391,415.45 and 125,934.03

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Solution

The fourth proportional to 260,775.45, 391,415.45 and 125,934.03 is: 189,022.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,775.45 : 391,415.45 = 125,934.03 : x
  2. Step 2: Convert to fraction form
    260,775.45/391,415.45 = 125,934.03/x
  3. Step 3: Cross multiply
    260,775.45x = 391,415.45 × 125,934.03
  4. Step 4: Simplify right side
    260,775.45x = 49,292,524,393.09
  5. Step 5: Solve for x
    x = 49,292,524,393.09/260,775.45
  6. Step 6: Final answer
    x = 189,022.87

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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.