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Finding the Fourth Proportional to 260,491.80, 389,700.90 and 225,816.60

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Solution

The fourth proportional to 260,491.80, 389,700.90 and 225,816.60 is: 337,826.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,491.80 : 389,700.90 = 225,816.60 : x
  2. Step 2: Convert to fraction form
    260,491.80/389,700.90 = 225,816.60/x
  3. Step 3: Cross multiply
    260,491.80x = 389,700.90 × 225,816.60
  4. Step 4: Simplify right side
    260,491.80x = 88,000,932,254.94
  5. Step 5: Solve for x
    x = 88,000,932,254.94/260,491.80
  6. Step 6: Final answer
    x = 337,826.11

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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.