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Finding the Fourth Proportional to 215,786.88, 323,679.84 and 75,585.60

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Solution

The fourth proportional to 215,786.88, 323,679.84 and 75,585.60 is: 113,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,786.88 : 323,679.84 = 75,585.60 : x
  2. Step 2: Convert to fraction form
    215,786.88/323,679.84 = 75,585.60/x
  3. Step 3: Cross multiply
    215,786.88x = 323,679.84 × 75,585.60
  4. Step 4: Simplify right side
    215,786.88x = 24,465,534,914.30
  5. Step 5: Solve for x
    x = 24,465,534,914.30/215,786.88
  6. Step 6: Final answer
    x = 113,378.23

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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.