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Finding the Fourth Proportional to 260,045.10, 389,203.65 and 188,765.10

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Solution

The fourth proportional to 260,045.10, 389,203.65 and 188,765.10 is: 282,520.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,045.10 : 389,203.65 = 188,765.10 : x
  2. Step 2: Convert to fraction form
    260,045.10/389,203.65 = 188,765.10/x
  3. Step 3: Cross multiply
    260,045.10x = 389,203.65 × 188,765.10
  4. Step 4: Simplify right side
    260,045.10x = 73,468,065,912.62
  5. Step 5: Solve for x
    x = 73,468,065,912.62/260,045.10
  6. Step 6: Final answer
    x = 282,520.48

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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.