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Finding the Fourth Proportional to 217,796.32, 300,562.47 and 121,006.42

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Solution

The fourth proportional to 217,796.32, 300,562.47 and 121,006.42 is: 166,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,796.32 : 300,562.47 = 121,006.42 : x
  2. Step 2: Convert to fraction form
    217,796.32/300,562.47 = 121,006.42/x
  3. Step 3: Cross multiply
    217,796.32x = 300,562.47 × 121,006.42
  4. Step 4: Simplify right side
    217,796.32x = 36,369,988,481.06
  5. Step 5: Solve for x
    x = 36,369,988,481.06/217,796.32
  6. Step 6: Final answer
    x = 166,990.83

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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.