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Finding the Fourth Proportional to 405,989.82, 560,227.39 and 274,900.43

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Solution

The fourth proportional to 405,989.82, 560,227.39 and 274,900.43 is: 379,336.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,989.82 : 560,227.39 = 274,900.43 : x
  2. Step 2: Convert to fraction form
    405,989.82/560,227.39 = 274,900.43/x
  3. Step 3: Cross multiply
    405,989.82x = 560,227.39 × 274,900.43
  4. Step 4: Simplify right side
    405,989.82x = 154,006,751,122.10
  5. Step 5: Solve for x
    x = 154,006,751,122.10/405,989.82
  6. Step 6: Final answer
    x = 379,336.48

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1.5x scale

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.