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Finding the Fourth Proportional to 218,818.85, 301,958.37 and 122,032.64

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Solution

The fourth proportional to 218,818.85, 301,958.37 and 122,032.64 is: 168,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,818.85 : 301,958.37 = 122,032.64 : x
  2. Step 2: Convert to fraction form
    218,818.85/301,958.37 = 122,032.64/x
  3. Step 3: Cross multiply
    218,818.85x = 301,958.37 × 122,032.64
  4. Step 4: Simplify right side
    218,818.85x = 36,848,777,816.09
  5. Step 5: Solve for x
    x = 36,848,777,816.09/218,818.85
  6. Step 6: Final answer
    x = 168,398.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.