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Finding the Fourth Proportional to 217,610.66, 300,324.29 and 122,117.73

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Solution

The fourth proportional to 217,610.66, 300,324.29 and 122,117.73 is: 168,534.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,610.66 : 300,324.29 = 122,117.73 : x
  2. Step 2: Convert to fraction form
    217,610.66/300,324.29 = 122,117.73/x
  3. Step 3: Cross multiply
    217,610.66x = 300,324.29 × 122,117.73
  4. Step 4: Simplify right side
    217,610.66x = 36,674,919,948.07
  5. Step 5: Solve for x
    x = 36,674,919,948.07/217,610.66
  6. Step 6: Final answer
    x = 168,534.58

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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.