Home / 217,629.78-326,381.37-91,266.66

Finding the Fourth Proportional to 217,629.78, 326,381.37 and 91,266.66

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Solution

The fourth proportional to 217,629.78, 326,381.37 and 91,266.66 is: 136,873.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,629.78 : 326,381.37 = 91,266.66 : x
  2. Step 2: Convert to fraction form
    217,629.78/326,381.37 = 91,266.66/x
  3. Step 3: Cross multiply
    217,629.78x = 326,381.37 × 91,266.66
  4. Step 4: Simplify right side
    217,629.78x = 29,787,737,526.12
  5. Step 5: Solve for x
    x = 29,787,737,526.12/217,629.78
  6. Step 6: Final answer
    x = 136,873.44

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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.