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Finding the Fourth Proportional to 259,308.85, 389,004.81 and 109,550.53

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Solution

The fourth proportional to 259,308.85, 389,004.81 and 109,550.53 is: 164,343.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,308.85 : 389,004.81 = 109,550.53 : x
  2. Step 2: Convert to fraction form
    259,308.85/389,004.81 = 109,550.53/x
  3. Step 3: Cross multiply
    259,308.85x = 389,004.81 × 109,550.53
  4. Step 4: Simplify right side
    259,308.85x = 42,615,683,108.05
  5. Step 5: Solve for x
    x = 42,615,683,108.05/259,308.85
  6. Step 6: Final answer
    x = 164,343.34

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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.