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Finding the Fourth Proportional to 308,071.43, 424,532.91 and 235,556.43

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Solution

The fourth proportional to 308,071.43, 424,532.91 and 235,556.43 is: 324,604.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,071.43 : 424,532.91 = 235,556.43 : x
  2. Step 2: Convert to fraction form
    308,071.43/424,532.91 = 235,556.43/x
  3. Step 3: Cross multiply
    308,071.43x = 424,532.91 × 235,556.43
  4. Step 4: Simplify right side
    308,071.43x = 100,001,456,697.11
  5. Step 5: Solve for x
    x = 100,001,456,697.11/308,071.43
  6. Step 6: Final answer
    x = 324,604.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.