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Finding the Fourth Proportional to 308,563.93, 462,679.48 and 139,992.28

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Solution

The fourth proportional to 308,563.93, 462,679.48 and 139,992.28 is: 209,912.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,563.93 : 462,679.48 = 139,992.28 : x
  2. Step 2: Convert to fraction form
    308,563.93/462,679.48 = 139,992.28/x
  3. Step 3: Cross multiply
    308,563.93x = 462,679.48 × 139,992.28
  4. Step 4: Simplify right side
    308,563.93x = 64,771,556,147.82
  5. Step 5: Solve for x
    x = 64,771,556,147.82/308,563.93
  6. Step 6: Final answer
    x = 209,912.92

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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.