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Finding the Fourth Proportional to 215,992.39, 323,987.20 and 73,769.05

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Solution

The fourth proportional to 215,992.39, 323,987.20 and 73,769.05 is: 110,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,992.39 : 323,987.20 = 73,769.05 : x
  2. Step 2: Convert to fraction form
    215,992.39/323,987.20 = 73,769.05/x
  3. Step 3: Cross multiply
    215,992.39x = 323,987.20 × 73,769.05
  4. Step 4: Simplify right side
    215,992.39x = 23,900,227,956.16
  5. Step 5: Solve for x
    x = 23,900,227,956.16/215,992.39
  6. Step 6: Final answer
    x = 110,653.10

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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.