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Finding the Fourth Proportional to 421,960.37, 582,290.82 and 240,730.97

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Solution

The fourth proportional to 421,960.37, 582,290.82 and 240,730.97 is: 332,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,960.37 : 582,290.82 = 240,730.97 : x
  2. Step 2: Convert to fraction form
    421,960.37/582,290.82 = 240,730.97/x
  3. Step 3: Cross multiply
    421,960.37x = 582,290.82 × 240,730.97
  4. Step 4: Simplify right side
    421,960.37x = 140,175,431,009.24
  5. Step 5: Solve for x
    x = 140,175,431,009.24/421,960.37
  6. Step 6: Final answer
    x = 332,200.47

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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.