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Finding the Fourth Proportional to 217,957.96, 300,782.24 and 122,464.60

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Solution

The fourth proportional to 217,957.96, 300,782.24 and 122,464.60 is: 169,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,957.96 : 300,782.24 = 122,464.60 : x
  2. Step 2: Convert to fraction form
    217,957.96/300,782.24 = 122,464.60/x
  3. Step 3: Cross multiply
    217,957.96x = 300,782.24 × 122,464.60
  4. Step 4: Simplify right side
    217,957.96x = 36,835,176,708.70
  5. Step 5: Solve for x
    x = 36,835,176,708.70/217,957.96
  6. Step 6: Final answer
    x = 169,001.29

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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.