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Finding the Fourth Proportional to 199,992.28, 299,988.44 and 138,056.44

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Solution

The fourth proportional to 199,992.28, 299,988.44 and 138,056.44 is: 207,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,992.28 : 299,988.44 = 138,056.44 : x
  2. Step 2: Convert to fraction form
    199,992.28/299,988.44 = 138,056.44/x
  3. Step 3: Cross multiply
    199,992.28x = 299,988.44 × 138,056.44
  4. Step 4: Simplify right side
    199,992.28x = 41,415,336,067.55
  5. Step 5: Solve for x
    x = 41,415,336,067.55/199,992.28
  6. Step 6: Final answer
    x = 207,084.67

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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.