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Finding the Fourth Proportional to 260,871.30, 391,782.15 and 228,212.10

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Solution

The fourth proportional to 260,871.30, 391,782.15 and 228,212.10 is: 342,733.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,871.30 : 391,782.15 = 228,212.10 : x
  2. Step 2: Convert to fraction form
    260,871.30/391,782.15 = 228,212.10/x
  3. Step 3: Cross multiply
    260,871.30x = 391,782.15 × 228,212.10
  4. Step 4: Simplify right side
    260,871.30x = 89,409,427,194.02
  5. Step 5: Solve for x
    x = 89,409,427,194.02/260,871.30
  6. Step 6: Final answer
    x = 342,733.86

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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.