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Finding the Fourth Proportional to 217,539.52, 326,372.46 and 77,309.08

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Solution

The fourth proportional to 217,539.52, 326,372.46 and 77,309.08 is: 115,986.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,539.52 : 326,372.46 = 77,309.08 : x
  2. Step 2: Convert to fraction form
    217,539.52/326,372.46 = 77,309.08/x
  3. Step 3: Cross multiply
    217,539.52x = 326,372.46 × 77,309.08
  4. Step 4: Simplify right side
    217,539.52x = 25,231,554,619.94
  5. Step 5: Solve for x
    x = 25,231,554,619.94/217,539.52
  6. Step 6: Final answer
    x = 115,986.07

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1.5x scale

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.