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Finding the Fourth Proportional to 260,889.45, 391,329.91 and 103,119.27

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Solution

The fourth proportional to 260,889.45, 391,329.91 and 103,119.27 is: 154,677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,889.45 : 391,329.91 = 103,119.27 : x
  2. Step 2: Convert to fraction form
    260,889.45/391,329.91 = 103,119.27/x
  3. Step 3: Cross multiply
    260,889.45x = 391,329.91 × 103,119.27
  4. Step 4: Simplify right side
    260,889.45x = 40,353,654,648.37
  5. Step 5: Solve for x
    x = 40,353,654,648.37/260,889.45
  6. Step 6: Final answer
    x = 154,677.22

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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.