Home / 354,474.62-489,338.79-218,532.86

Finding the Fourth Proportional to 354,474.62, 489,338.79 and 218,532.86

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Solution

The fourth proportional to 354,474.62, 489,338.79 and 218,532.86 is: 301,676.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,474.62 : 489,338.79 = 218,532.86 : x
  2. Step 2: Convert to fraction form
    354,474.62/489,338.79 = 218,532.86/x
  3. Step 3: Cross multiply
    354,474.62x = 489,338.79 × 218,532.86
  4. Step 4: Simplify right side
    354,474.62x = 106,936,605,287.64
  5. Step 5: Solve for x
    x = 106,936,605,287.64/354,474.62
  6. Step 6: Final answer
    x = 301,676.34

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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.