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Finding the Fourth Proportional to 138,794, 208,196.76 and 40,298

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Solution

The fourth proportional to 138,794, 208,196.76 and 40,298 is: 60,448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,794 : 208,196.76 = 40,298 : x
  2. Step 2: Convert to fraction form
    138,794/208,196.76 = 40,298/x
  3. Step 3: Cross multiply
    138,794x = 208,196.76 × 40,298
  4. Step 4: Simplify right side
    138,794x = 8,389,913,034.48
  5. Step 5: Solve for x
    x = 8,389,913,034.48/138,794
  6. Step 6: Final answer
    x = 60,448.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.