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Finding the Fourth Proportional to 260,687.70, 391,031.55 and 110,890.35

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Solution

The fourth proportional to 260,687.70, 391,031.55 and 110,890.35 is: 166,335.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,687.70 : 391,031.55 = 110,890.35 : x
  2. Step 2: Convert to fraction form
    260,687.70/391,031.55 = 110,890.35/x
  3. Step 3: Cross multiply
    260,687.70x = 391,031.55 × 110,890.35
  4. Step 4: Simplify right side
    260,687.70x = 43,361,625,440.54
  5. Step 5: Solve for x
    x = 43,361,625,440.54/260,687.70
  6. Step 6: Final answer
    x = 166,335.53

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1.5x scale

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.