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Finding the Fourth Proportional to 217,448.16, 300,079.53 and 121,959.96

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Solution

The fourth proportional to 217,448.16, 300,079.53 and 121,959.96 is: 168,305.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,448.16 : 300,079.53 = 121,959.96 : x
  2. Step 2: Convert to fraction form
    217,448.16/300,079.53 = 121,959.96/x
  3. Step 3: Cross multiply
    217,448.16x = 300,079.53 × 121,959.96
  4. Step 4: Simplify right side
    217,448.16x = 36,597,687,475.62
  5. Step 5: Solve for x
    x = 36,597,687,475.62/217,448.16
  6. Step 6: Final answer
    x = 168,305.34

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