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Finding the Fourth Proportional to 215,979, 324,066.92 and 110,871.84

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Solution

The fourth proportional to 215,979, 324,066.92 and 110,871.84 is: 166,358.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,979 : 324,066.92 = 110,871.84 : x
  2. Step 2: Convert to fraction form
    215,979/324,066.92 = 110,871.84/x
  3. Step 3: Cross multiply
    215,979x = 324,066.92 × 110,871.84
  4. Step 4: Simplify right side
    215,979x = 35,929,895,703.53
  5. Step 5: Solve for x
    x = 35,929,895,703.53/215,979
  6. Step 6: Final answer
    x = 166,358.28

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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.