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Finding the Fourth Proportional to 217,538.52, 326,370.96 and 77,308.08

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Solution

The fourth proportional to 217,538.52, 326,370.96 and 77,308.08 is: 115,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,538.52 : 326,370.96 = 77,308.08 : x
  2. Step 2: Convert to fraction form
    217,538.52/326,370.96 = 77,308.08/x
  3. Step 3: Cross multiply
    217,538.52x = 326,370.96 × 77,308.08
  4. Step 4: Simplify right side
    217,538.52x = 25,231,112,285.36
  5. Step 5: Solve for x
    x = 25,231,112,285.36/217,538.52
  6. Step 6: Final answer
    x = 115,984.57

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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.