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Finding the Fourth Proportional to 260,437.80, 389,619.90 and 225,762.60

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Solution

The fourth proportional to 260,437.80, 389,619.90 and 225,762.60 is: 337,745.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,437.80 : 389,619.90 = 225,762.60 : x
  2. Step 2: Convert to fraction form
    260,437.80/389,619.90 = 225,762.60/x
  3. Step 3: Cross multiply
    260,437.80x = 389,619.90 × 225,762.60
  4. Step 4: Simplify right side
    260,437.80x = 87,961,601,635.74
  5. Step 5: Solve for x
    x = 87,961,601,635.74/260,437.80
  6. Step 6: Final answer
    x = 337,745.14

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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.